diff --git a/OpenSim/Data/MySQL/MySQLAuthenticationData.cs b/OpenSim/Data/MySQL/MySQLAuthenticationData.cs
index e96a123348..0780936d9c 100644
--- a/OpenSim/Data/MySQL/MySQLAuthenticationData.cs
+++ b/OpenSim/Data/MySQL/MySQLAuthenticationData.cs
@@ -55,39 +55,41 @@ namespace OpenSim.Data.MySQL
             AuthenticationData ret = new AuthenticationData();
             ret.Data = new Dictionary<string, object>();
 
-            using (MySqlCommand cmd = new MySqlCommand("select * from `" + m_Realm + "` where UUID = ?principalID"))
+            MySqlCommand cmd = new MySqlCommand("select * from `" + m_Realm + "` where UUID = ?principalID");
+
+            cmd.Parameters.AddWithValue("?principalID", principalID.ToString());
+
+            IDataReader result = ExecuteReader(cmd);
+
+            if (result.Read())
             {
-                cmd.Parameters.AddWithValue("?principalID", principalID.ToString());
+                ret.PrincipalID = principalID;
 
-                using (IDataReader result = ExecuteReader(cmd))
+                if (m_ColumnNames == null)
                 {
-                    if (result.Read())
-                    {
-                        ret.PrincipalID = principalID;
+                    m_ColumnNames = new List<string>();
 
-                        if (m_ColumnNames == null)
-                        {
-                            m_ColumnNames = new List<string>();
-
-                            DataTable schemaTable = result.GetSchemaTable();
-                            foreach (DataRow row in schemaTable.Rows)
-                                m_ColumnNames.Add(row["ColumnName"].ToString());
-                        }
-
-                        foreach (string s in m_ColumnNames)
-                        {
-                            if (s == "UUID")
-                                continue;
-
-                            ret.Data[s] = result[s].ToString();
-                        }
-
-                        return ret;
-                    }
+                    DataTable schemaTable = result.GetSchemaTable();
+                    foreach (DataRow row in schemaTable.Rows)
+                        m_ColumnNames.Add(row["ColumnName"].ToString());
                 }
-            }
 
-            return null;
+                foreach (string s in m_ColumnNames)
+                {
+                    if (s == "UUID")
+                        continue;
+
+                    ret.Data[s] = result[s].ToString();
+                }
+
+                CloseDBConnection(result, cmd);
+                return ret;
+            }
+            else
+            {
+                CloseDBConnection(result, cmd);
+                return null;
+            }
         }
 
         public bool Store(AuthenticationData data)
diff --git a/OpenSim/Data/MySQL/MySQLFramework.cs b/OpenSim/Data/MySQL/MySQLFramework.cs
index c756c9cf45..ccd1ab0ed9 100644
--- a/OpenSim/Data/MySQL/MySQLFramework.cs
+++ b/OpenSim/Data/MySQL/MySQLFramework.cs
@@ -40,14 +40,15 @@ namespace OpenSim.Data.MySQL
     /// </summary>
     public class MySqlFramework
     {
-        private static readonly log4net.ILog m_log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
+        private static readonly log4net.ILog m_log =
+                log4net.LogManager.GetLogger(
+                System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
 
         protected MySqlConnection m_Connection;
 
         protected MySqlFramework(string connectionString)
         {
             m_Connection = new MySqlConnection(connectionString);
-
             m_Connection.Open();
         }
 
@@ -82,8 +83,8 @@ namespace OpenSim.Data.MySQL
                             errorSeen = true;
 
                             m_Connection.Close();
-                            MySqlConnection newConnection = (MySqlConnection)
-                                    ((ICloneable)m_Connection).Clone();
+                            MySqlConnection newConnection =
+                                    (MySqlConnection)((ICloneable)m_Connection).Clone();
                             m_Connection.Dispose();
                             m_Connection = newConnection;
                             m_Connection.Open();
@@ -104,14 +105,19 @@ namespace OpenSim.Data.MySQL
         
         protected IDataReader ExecuteReader(MySqlCommand cmd)
         {
-            MySqlConnection newConnection = (MySqlConnection)
-                    ((ICloneable)m_Connection).Clone();
-            
+            MySqlConnection newConnection =
+                    (MySqlConnection)((ICloneable)m_Connection).Clone();
             newConnection.Open();
 
             cmd.Connection = newConnection;
-
             return cmd.ExecuteReader();
         }
+
+        protected void CloseDBConnection(IDataReader reader, MySqlCommand cmd)
+        {
+            reader.Close();
+            cmd.Connection.Close();
+            cmd.Connection.Dispose();
+        }
     }
 }
diff --git a/OpenSim/Data/MySQL/MySQLRegionData.cs b/OpenSim/Data/MySQL/MySQLRegionData.cs
index 04b24b6362..3b561d14ed 100644
--- a/OpenSim/Data/MySQL/MySQLRegionData.cs
+++ b/OpenSim/Data/MySQL/MySQLRegionData.cs
@@ -172,6 +172,8 @@ namespace OpenSim.Data.MySQL
 
                     retList.Add(ret);
                 }
+
+                CloseDBConnection(result, cmd);
             }
 
             return retList;
diff --git a/OpenSim/Data/MySQL/MySQLUserAccountData.cs b/OpenSim/Data/MySQL/MySQLUserAccountData.cs
index c713a119d3..0bbc3f5645 100644
--- a/OpenSim/Data/MySQL/MySQLUserAccountData.cs
+++ b/OpenSim/Data/MySQL/MySQLUserAccountData.cs
@@ -64,45 +64,47 @@ namespace OpenSim.Data.MySQL
             if (scopeID != UUID.Zero)
                 command += " and ScopeID = ?scopeID";
 
-            using (MySqlCommand cmd = new MySqlCommand(command))
+            MySqlCommand cmd = new MySqlCommand(command);
+
+            cmd.Parameters.AddWithValue("?principalID", principalID.ToString());
+            cmd.Parameters.AddWithValue("?scopeID", scopeID.ToString());
+
+            IDataReader result = ExecuteReader(cmd);
+
+            if (result.Read())
             {
-                cmd.Parameters.AddWithValue("?principalID", principalID.ToString());
-                cmd.Parameters.AddWithValue("?scopeID", scopeID.ToString());
+                ret.PrincipalID = principalID;
+                UUID scope;
+                UUID.TryParse(result["ScopeID"].ToString(), out scope);
+                ret.ScopeID = scope;
 
-                using (IDataReader result = ExecuteReader(cmd))
+                if (m_ColumnNames == null)
                 {
-                    if (result.Read())
-                    {
-                        ret.PrincipalID = principalID;
-                        UUID scope;
-                        UUID.TryParse(result["ScopeID"].ToString(), out scope);
-                        ret.ScopeID = scope;
+                    m_ColumnNames = new List<string>();
 
-                        if (m_ColumnNames == null)
-                        {
-                            m_ColumnNames = new List<string>();
-
-                            DataTable schemaTable = result.GetSchemaTable();
-                            foreach (DataRow row in schemaTable.Rows)
-                                m_ColumnNames.Add(row["ColumnName"].ToString());
-                        }
-
-                        foreach (string s in m_ColumnNames)
-                        {
-                            if (s == "UUID")
-                                continue;
-                            if (s == "ScopeID")
-                                continue;
-
-                            ret.Data[s] = result[s].ToString();
-                        }
-
-                        return ret;
-                    }
+                    DataTable schemaTable = result.GetSchemaTable();
+                    foreach (DataRow row in schemaTable.Rows)
+                        m_ColumnNames.Add(row["ColumnName"].ToString());
                 }
-            }
 
-            return null;
+                foreach (string s in m_ColumnNames)
+                {
+                    if (s == "UUID")
+                        continue;
+                    if (s == "ScopeID")
+                        continue;
+
+                    ret.Data[s] = result[s].ToString();
+                }
+
+                CloseDBConnection(result, cmd);
+                return ret;
+            }
+            else
+            {
+                CloseDBConnection(result, cmd);
+                return null;
+            }
         }
 
         public bool Store(UserAccountData data)
diff --git a/OpenSim/Framework/Communications/RestClient.cs b/OpenSim/Framework/Communications/RestClient.cs
index 7a735060fe..d98f47d80b 100644
--- a/OpenSim/Framework/Communications/RestClient.cs
+++ b/OpenSim/Framework/Communications/RestClient.cs
@@ -318,11 +318,11 @@ namespace OpenSim.Framework.Communications
                     HttpWebResponse errorResponse = e.Response as HttpWebResponse;
                     if (null != errorResponse && HttpStatusCode.NotFound == errorResponse.StatusCode)
                     {
-                        m_log.Warn("[ASSET] Asset not found (404)");
+                        m_log.Warn("[REST CLIENT] Resource not found (404)");
                     }
                     else
                     {
-                        m_log.Error("[ASSET] Error fetching asset from asset server");
+                        m_log.Error("[REST CLIENT] Error fetching resource from server " + _request.Address.ToString());
                         m_log.Debug(e.ToString());
                     }
 
diff --git a/OpenSim/Framework/Servers/BaseOpenSimServer.cs b/OpenSim/Framework/Servers/BaseOpenSimServer.cs
index 632b551f47..56155ddd59 100644
--- a/OpenSim/Framework/Servers/BaseOpenSimServer.cs
+++ b/OpenSim/Framework/Servers/BaseOpenSimServer.cs
@@ -238,7 +238,7 @@ namespace OpenSim.Framework.Servers
             List<Thread> threads = ThreadTracker.GetThreads();
             if (threads == null)
             {
-                sb.Append("Thread tracking is only enabled in DEBUG mode.");
+                sb.Append("OpenSim thread tracking is only enabled in DEBUG mode.");
             }
             else
             {
@@ -264,6 +264,12 @@ namespace OpenSim.Framework.Servers
                     }
                 }
             }
+            int workers = 0, ports = 0, maxWorkers = 0, maxPorts = 0;
+            ThreadPool.GetAvailableThreads(out workers, out ports);
+            ThreadPool.GetMaxThreads(out maxWorkers, out maxPorts);
+
+            sb.Append(Environment.NewLine + "*** ThreadPool threads ***"  + Environment.NewLine);
+            sb.Append("workers: " + (maxWorkers - workers) + " (" + maxWorkers + "); ports: " + (maxPorts - ports) + " (" + maxPorts + ")" + Environment.NewLine);
 
             return sb.ToString();
         }
diff --git a/OpenSim/Framework/Servers/HttpServer/SynchronousRestFormsRequester.cs b/OpenSim/Framework/Servers/HttpServer/SynchronousRestFormsRequester.cs
index 8a490f7233..4543fd5e99 100644
--- a/OpenSim/Framework/Servers/HttpServer/SynchronousRestFormsRequester.cs
+++ b/OpenSim/Framework/Servers/HttpServer/SynchronousRestFormsRequester.cs
@@ -28,14 +28,21 @@
 using System;
 using System.IO;
 using System.Net;
+using System.Reflection;
 using System.Text;
 using System.Xml;
 using System.Xml.Serialization;
 
+using log4net;
+
 namespace OpenSim.Framework.Servers.HttpServer
 {
     public class SynchronousRestFormsRequester
     {
+        private static readonly ILog m_log =
+                LogManager.GetLogger(
+                MethodBase.GetCurrentMethod().DeclaringType);
+        
         /// <summary>
         /// Perform a synchronous REST request.
         /// </summary>
@@ -72,8 +79,9 @@ namespace OpenSim.Framework.Servers.HttpServer
                     requestStream = request.GetRequestStream();
                     requestStream.Write(buffer.ToArray(), 0, length);
                 }
-                catch
+                catch (Exception e)
                 {
+                    m_log.DebugFormat("[FORMS]: exception occured on sending request {0}", e.Message);
                 }
                 finally
                 {
@@ -102,7 +110,10 @@ namespace OpenSim.Framework.Servers.HttpServer
                                 respstring = reader.ReadToEnd();
                             }
                         }
-                        catch { }
+                        catch (Exception e)
+                        {
+                            m_log.DebugFormat("[FORMS]: exception occured on receiving reply {0}", e.Message);
+                        }
                         finally
                         {
                             if (respStream != null)
@@ -114,6 +125,7 @@ namespace OpenSim.Framework.Servers.HttpServer
             catch (System.InvalidOperationException)
             {
                 // This is what happens when there is invalid XML
+                m_log.DebugFormat("[FORMS]: InvalidOperationException on receiving request");
             }
             return respstring;
         }
diff --git a/OpenSim/Region/ClientStack/LindenUDP/LLImageManager.cs b/OpenSim/Region/ClientStack/LindenUDP/LLImageManager.cs
index 2120d33d42..cc290edd99 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/LLImageManager.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/LLImageManager.cs
@@ -88,7 +88,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 J2KImage imgrequest;
 
                 // Do a linear search for this texture download
-                lock (m_priorityQueue)
+                lock (m_syncRoot)
                     m_priorityQueue.Find(delegate(J2KImage img) { return img.TextureID == newRequest.RequestedAssetID; }, out imgrequest);
 
                 if (imgrequest != null)
@@ -99,7 +99,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
                         try 
                         {
-                            lock (m_priorityQueue)
+                            lock (m_syncRoot)
                                 m_priorityQueue.Delete(imgrequest.PriorityQueueHandle); 
                         }
                         catch (Exception) { }
@@ -211,7 +211,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         {
             J2KImage image = null;
 
-            lock (m_priorityQueue)
+            lock (m_syncRoot)
             {
 
                 if (m_priorityQueue.Count > 0)
@@ -230,23 +230,27 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         {
             image.PriorityQueueHandle = null;
 
-            lock (m_priorityQueue)
-                m_priorityQueue.Add(ref image.PriorityQueueHandle, image);
+            lock (m_syncRoot)
+                try
+                {
+                    m_priorityQueue.Add(ref image.PriorityQueueHandle, image);
+                }
+                catch (Exception) { }
         }
 
         void RemoveImageFromQueue(J2KImage image)
         {
-            try
-            {
-                lock (m_priorityQueue)
+            lock (m_syncRoot)
+                try
+                {
                     m_priorityQueue.Delete(image.PriorityQueueHandle);
-            }
-            catch (Exception) { }
+                }
+                catch (Exception) { }
         }
 
         void UpdateImageInQueue(J2KImage image)
         {
-            lock (m_priorityQueue)
+            lock (m_syncRoot)
             {
                 try { m_priorityQueue.Replace(image.PriorityQueueHandle, image); }
                 catch (Exception)
diff --git a/OpenSim/Region/CoreModules/Asset/CenomeAssetCache.cs b/OpenSim/Region/CoreModules/Asset/CenomeAssetCache.cs
index 5a5ad7e493..66ca7c2336 100644
--- a/OpenSim/Region/CoreModules/Asset/CenomeAssetCache.cs
+++ b/OpenSim/Region/CoreModules/Asset/CenomeAssetCache.cs
@@ -178,7 +178,7 @@ namespace OpenSim.Region.CoreModules.Asset
         {
             if (maximalSize <= 0 || maximalCount <= 0)
             {
-                Log.Info("[ASSET CACHE]: Cenome asset cache is not enabled.");
+                //Log.Debug("[ASSET CACHE]: Cenome asset cache is not enabled.");
                 m_enabled = false;
                 return;
             }
@@ -194,7 +194,7 @@ namespace OpenSim.Region.CoreModules.Asset
                 CnmSynchronizedCache<string, AssetBase>.Synchronized(new CnmMemoryCache<string, AssetBase>(
                     maximalSize, maximalCount, expirationTime));
             m_enabled = true;
-            Log.InfoFormat(
+            Log.DebugFormat(
                 "[ASSET CACHE]: Cenome asset cache enabled (MaxSize = {0} bytes, MaxCount = {1}, ExpirationTime = {2})",
                 maximalSize,
                 maximalCount,
@@ -263,7 +263,7 @@ namespace OpenSim.Region.CoreModules.Asset
 
             if (m_getCount == m_debugEpoch)
             {
-                Log.InfoFormat(
+                Log.DebugFormat(
                     "[ASSET CACHE]: Cached = {0}, Get = {1}, Hits = {2}%, Size = {3} bytes, Avg. A. Size = {4} bytes",
                     m_cachedCount,
                     m_getCount,
@@ -333,7 +333,7 @@ namespace OpenSim.Region.CoreModules.Asset
                 return;
 
             string name = moduleConfig.GetString("AssetCaching");
-            Log.DebugFormat("[XXX] name = {0} (this module's name: {1}", name, Name);
+            //Log.DebugFormat("[XXX] name = {0} (this module's name: {1}", name, Name);
 
             if (name != Name)
                 return;
@@ -343,14 +343,14 @@ namespace OpenSim.Region.CoreModules.Asset
             int maxCount = DefaultMaxCount;
             TimeSpan expirationTime = DefaultExpirationTime;
 
-            IConfig assetConfig = source.Configs[ "AssetCache" ];
+            IConfig assetConfig = source.Configs["AssetCache"];
             if (assetConfig != null)
             {
                 // Get optional configurations
                 maxSize = assetConfig.GetLong("MaxSize", DefaultMaxSize);
                 maxCount = assetConfig.GetInt("MaxCount", DefaultMaxCount);
                 expirationTime =
-                    TimeSpan.FromMinutes(assetConfig.GetInt("ExpirationTime", (int) DefaultExpirationTime.TotalMinutes));
+                    TimeSpan.FromMinutes(assetConfig.GetInt("ExpirationTime", (int)DefaultExpirationTime.TotalMinutes));
 
                 // Debugging purposes only
                 m_debugEpoch = assetConfig.GetInt("DebugEpoch", 0);
diff --git a/OpenSim/Region/CoreModules/Asset/CoreAssetCache.cs b/OpenSim/Region/CoreModules/Asset/CoreAssetCache.cs
index 2de40d28ee..0a7e736599 100644
--- a/OpenSim/Region/CoreModules/Asset/CoreAssetCache.cs
+++ b/OpenSim/Region/CoreModules/Asset/CoreAssetCache.cs
@@ -66,7 +66,7 @@ namespace OpenSim.Region.CoreModules.Asset
             if (moduleConfig != null)
             {
                 string name = moduleConfig.GetString("AssetCaching");
-                m_log.DebugFormat("[XXX] name = {0} (this module's name: {1}", name, Name);
+                //m_log.DebugFormat("[XXX] name = {0} (this module's name: {1}", name, Name);
 
                 if (name == Name)
                 {
diff --git a/OpenSim/Region/CoreModules/Asset/FlotsamAssetCache.cs b/OpenSim/Region/CoreModules/Asset/FlotsamAssetCache.cs
index c0bb70cafc..b81ab41351 100644
--- a/OpenSim/Region/CoreModules/Asset/FlotsamAssetCache.cs
+++ b/OpenSim/Region/CoreModules/Asset/FlotsamAssetCache.cs
@@ -636,11 +636,8 @@ namespace Flotsam.RegionModules.AssetCache
                 m_log.InfoFormat("[FLOTSAM ASSET CACHE] flotsamcache clearfile - Remove all assets cached on disk");
 
             }
-
-
         }
 
         #endregion
-
     }
-}
+}
\ No newline at end of file
diff --git a/OpenSim/Region/CoreModules/Asset/GlynnTuckerAssetCache.cs b/OpenSim/Region/CoreModules/Asset/GlynnTuckerAssetCache.cs
index 8d8e0fe481..4869f5d6b8 100644
--- a/OpenSim/Region/CoreModules/Asset/GlynnTuckerAssetCache.cs
+++ b/OpenSim/Region/CoreModules/Asset/GlynnTuckerAssetCache.cs
@@ -68,7 +68,7 @@ namespace OpenSim.Region.CoreModules.Asset
             if (moduleConfig != null)
             {
                 string name = moduleConfig.GetString("AssetCaching");
-                m_log.DebugFormat("[ASSET CACHE] name = {0} (this module's name: {1}). Sync? ", name, Name, m_Cache.IsSynchronized);
+                //m_log.DebugFormat("[ASSET CACHE] name = {0} (this module's name: {1}). Sync? ", name, Name, m_Cache.IsSynchronized);
 
                 if (name == Name)
                 {
diff --git a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/LocalGridServiceConnector.cs b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/LocalGridServiceConnector.cs
index 3ca4882327..1c72488bbc 100644
--- a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/LocalGridServiceConnector.cs
+++ b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/LocalGridServiceConnector.cs
@@ -206,6 +206,20 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
 
         public GridRegion GetRegionByPosition(UUID scopeID, int x, int y)
         {
+            GridRegion region = null;
+
+            // First see if it's a neighbour, even if it isn't on this sim.
+            // Neighbour data is cached in memory, so this is fast
+            foreach (RegionCache rcache in m_LocalCache.Values)
+            {
+                region = rcache.GetRegionByPosition(x, y);
+                if (region != null)
+                {
+                    return region;
+                }
+            }
+
+            // Then try on this sim (may be a lookup in DB if this is using MySql).
             return m_GridService.GetRegionByPosition(scopeID, x, y);
         }
 
diff --git a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RegionCache.cs b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RegionCache.cs
index 2b336bb0a2..44e850bae3 100644
--- a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RegionCache.cs
+++ b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RegionCache.cs
@@ -29,10 +29,12 @@ using System;
 using System.Collections.Generic;
 using System.Reflection;
 
+using OpenSim.Framework;
 using OpenSim.Region.Framework.Scenes;
 using OpenSim.Services.Interfaces;
 using GridRegion = OpenSim.Services.Interfaces.GridRegion;
 
+using OpenMetaverse;
 using log4net;
 
 namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
@@ -75,5 +77,17 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
         {
             return new List<GridRegion>(m_neighbours.Values);
         }
+
+        public GridRegion GetRegionByPosition(int x, int y)
+        {
+            uint xsnap = (uint)(x / Constants.RegionSize) * Constants.RegionSize;
+            uint ysnap = (uint)(y / Constants.RegionSize) * Constants.RegionSize;
+            ulong handle = Utils.UIntsToLong(xsnap, ysnap);
+            
+            if (m_neighbours.ContainsKey(handle))
+                return m_neighbours[handle];
+            
+            return null;
+        }
     }
 }
diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
index c06a58f397..9418e3d8f6 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -137,6 +137,8 @@ namespace OpenSim.Region.Framework.Scenes
         protected IAssetService m_AssetService = null;
         protected IAuthorizationService m_AuthorizationService = null;
 
+        private Object m_heartbeatLock = new Object();
+
         public IAssetService AssetService
         {
             get
@@ -942,6 +944,9 @@ namespace OpenSim.Region.Framework.Scenes
         /// <param name="e"></param>
         private void Heartbeat(object sender)
         {
+            if (!Monitor.TryEnter(m_heartbeatLock))
+                return;
+
             try
             {
                 Update();
@@ -952,6 +957,11 @@ namespace OpenSim.Region.Framework.Scenes
             catch (ThreadAbortException)
             {
             }
+            finally
+            {
+                Monitor.Pulse(m_heartbeatLock);
+                Monitor.Exit(m_heartbeatLock);
+            }
         }
 
         /// <summary>
@@ -962,6 +972,12 @@ namespace OpenSim.Region.Framework.Scenes
             int maintc = 0;
             while (!shuttingdown)
             {
+//#if DEBUG
+//                int w = 0, io = 0;
+//                ThreadPool.GetAvailableThreads(out w, out io);
+//                if ((w < 10) || (io < 10))
+//                    m_log.DebugFormat("[WARNING]: ThreadPool reaching exhaustion. workers = {0}; io = {1}", w, io);
+//#endif
                 maintc = Environment.TickCount;
 
                 TimeSpan SinceLastFrame = DateTime.Now - m_lastupdate;
diff --git a/OpenSim/Region/Physics/OdePlugin/OdePlugin.cs b/OpenSim/Region/Physics/OdePlugin/OdePlugin.cs
index 06bae5a37f..c02b1234ec 100644
--- a/OpenSim/Region/Physics/OdePlugin/OdePlugin.cs
+++ b/OpenSim/Region/Physics/OdePlugin/OdePlugin.cs
@@ -3488,7 +3488,7 @@ namespace OpenSim.Region.Physics.OdePlugin
         public override void UnCombine(PhysicsScene pScene)
         {
             IntPtr localGround = IntPtr.Zero;
-            float[] localHeightfield;
+            //float[] localHeightfield;
             bool proceed = false;
             List<IntPtr> geomDestroyList = new List<IntPtr>();
 
@@ -3785,16 +3785,13 @@ namespace OpenSim.Region.Physics.OdePlugin
                         sides.Z = 0.5f;
 
                         ds.DrawBox(ref pos, ref R, ref sides);
-
-
                     }
                 }
             }
         }
 
         public void start(int unused)
-        {
-            
+        {            
             ds.SetViewpoint(ref xyz, ref hpr);
         }
 #endif
diff --git a/OpenSim/Server/Base/ServerUtils.cs b/OpenSim/Server/Base/ServerUtils.cs
index 0964caaed7..9d9735e439 100644
--- a/OpenSim/Server/Base/ServerUtils.cs
+++ b/OpenSim/Server/Base/ServerUtils.cs
@@ -260,7 +260,7 @@ namespace OpenSim.Server.Base
 
         public static Dictionary<string, object> ParseXmlResponse(string data)
         {
-            //m_log.DebugFormat("[XXX]: received xml string: {0}", data);
+            m_log.DebugFormat("[XXX]: received xml string: {0}", data);
 
             Dictionary<string, object> ret = new Dictionary<string, object>();
 
diff --git a/OpenSim/Server/Handlers/Grid/GridServerPostHandler.cs b/OpenSim/Server/Handlers/Grid/GridServerPostHandler.cs
index e22328dc66..433ed0b700 100644
--- a/OpenSim/Server/Handlers/Grid/GridServerPostHandler.cs
+++ b/OpenSim/Server/Handlers/Grid/GridServerPostHandler.cs
@@ -67,43 +67,50 @@ namespace OpenSim.Server.Handlers.Grid
 
             //m_log.DebugFormat("[XXX]: query String: {0}", body);
 
-            Dictionary<string, string> request =
-                    ServerUtils.ParseQueryString(body);
-
-            if (!request.ContainsKey("METHOD"))
-                return FailureResult();
-
-            string method = request["METHOD"];
-
-            switch (method)
+            try
             {
-                case "register":
-                    return Register(request);
+                Dictionary<string, string> request =
+                        ServerUtils.ParseQueryString(body);
 
-                case "deregister":
-                    return Deregister(request);
+                if (!request.ContainsKey("METHOD"))
+                    return FailureResult();
 
-                case "get_neighbours":
-                    return GetNeighbours(request);
+                string method = request["METHOD"];
 
-                case "get_region_by_uuid":
-                    return GetRegionByUUID(request);
+                switch (method)
+                {
+                    case "register":
+                        return Register(request);
 
-                case "get_region_by_position":
-                    return GetRegionByPosition(request);
+                    case "deregister":
+                        return Deregister(request);
 
-                case "get_region_by_name":
-                    return GetRegionByName(request);
+                    case "get_neighbours":
+                        return GetNeighbours(request);
 
-                case "get_regions_by_name":
-                    return GetRegionsByName(request);
+                    case "get_region_by_uuid":
+                        return GetRegionByUUID(request);
 
-                case "get_region_range":
-                    return GetRegionRange(request);
+                    case "get_region_by_position":
+                        return GetRegionByPosition(request);
 
+                    case "get_region_by_name":
+                        return GetRegionByName(request);
+
+                    case "get_regions_by_name":
+                        return GetRegionsByName(request);
+
+                    case "get_region_range":
+                        return GetRegionRange(request);
+
+                }
+                m_log.DebugFormat("[GRID HANDLER]: unknown method {0} request {1}", method.Length, method);
+            }
+            catch (Exception e)
+            {
+                m_log.DebugFormat("[GRID HANDLER]: Exception {0}", e);
             }
 
-            m_log.DebugFormat("[GRID HANDLER]: unknown method {0} request {1}", method.Length, method);
             return FailureResult();
 
         }
@@ -113,7 +120,7 @@ namespace OpenSim.Server.Handlers.Grid
         byte[] Register(Dictionary<string, string> request)
         {
             UUID scopeID = UUID.Zero;
-            if (request["SCOPEID"] != null)
+            if (request.ContainsKey("SCOPEID"))
                 UUID.TryParse(request["SCOPEID"], out scopeID);
             else
                 m_log.WarnFormat("[GRID HANDLER]: no scopeID in request to register region");
@@ -137,11 +144,21 @@ namespace OpenSim.Server.Handlers.Grid
             }
 
             Dictionary<string, object> rinfoData = new Dictionary<string, object>();
-            foreach (KeyValuePair<string, string> kvp in request)
-                rinfoData[kvp.Key] = kvp.Value;
-            GridRegion rinfo = new GridRegion(rinfoData);
+            GridRegion rinfo = null;
+            try
+            {
+                foreach (KeyValuePair<string, string> kvp in request)
+                    rinfoData[kvp.Key] = kvp.Value;
+                rinfo = new GridRegion(rinfoData);
+            }
+            catch (Exception e)
+            {
+                m_log.DebugFormat("[GRID HANDLER]: exception unpacking region data: {0}", e);
+            }
 
-            bool result = m_GridService.RegisterRegion(scopeID, rinfo);
+            bool result = false;
+            if (rinfo != null)
+                result = m_GridService.RegisterRegion(scopeID, rinfo);
 
             if (result)
                 return SuccessResult();
diff --git a/OpenSim/Services/Connectors/Grid/GridServiceConnector.cs b/OpenSim/Services/Connectors/Grid/GridServiceConnector.cs
index ba46b0d71f..acdf5587de 100644
--- a/OpenSim/Services/Connectors/Grid/GridServiceConnector.cs
+++ b/OpenSim/Services/Connectors/Grid/GridServiceConnector.cs
@@ -109,8 +109,13 @@ namespace OpenSim.Services.Connectors
                 {
                     Dictionary<string, object> replyData = ServerUtils.ParseXmlResponse(reply);
 
-                    if ((replyData["Result"] != null) && (replyData["Result"].ToString().ToLower() == "success"))
+                    if (replyData.ContainsKey("Result")&& (replyData["Result"].ToString().ToLower() == "success"))
                         return true;
+                    else if (!replyData.ContainsKey("Result"))
+                        m_log.DebugFormat("[GRID CONNECTOR]: reply data does not contain result field");
+                    else
+                        m_log.DebugFormat("[GRID CONNECTOR]: unexpected result {0}", replyData["Result"].ToString());
+                    
                 }
                 else
                     m_log.DebugFormat("[GRID CONNECTOR]: RegisterRegion received null reply");
diff --git a/OpenSim/Services/GridService/GridService.cs b/OpenSim/Services/GridService/GridService.cs
index 991acf23ee..a2e4771d4b 100644
--- a/OpenSim/Services/GridService/GridService.cs
+++ b/OpenSim/Services/GridService/GridService.cs
@@ -69,18 +69,40 @@ namespace OpenSim.Services.GridService
                 ((region.posX != regionInfos.RegionLocX) || (region.posY != regionInfos.RegionLocY)))
             {
                 // Region reregistering in other coordinates. Delete the old entry
-                m_Database.Delete(regionInfos.RegionID);
+                m_log.DebugFormat("[GRID SERVICE]: Region {0} ({1}) was previously registered at {2}-{3}. Deleting old entry.",
+                    regionInfos.RegionName, regionInfos.RegionID, regionInfos.RegionLocX, regionInfos.RegionLocY);
+
+                try
+                {
+                    m_Database.Delete(regionInfos.RegionID);
+                }
+                catch (Exception e)
+                {
+                    m_log.DebugFormat("[GRID SERVICE]: Database exception: {0}", e);
+                }
             }
 
             // Everything is ok, let's register
             RegionData rdata = RegionInfo2RegionData(regionInfos);
             rdata.ScopeID = scopeID;
-            m_Database.Store(rdata);
+            try
+            {
+                m_Database.Store(rdata);
+            }
+            catch (Exception e)
+            {
+                m_log.DebugFormat("[GRID SERVICE]: Database exception: {0}", e);
+            }
+
+            m_log.DebugFormat("[GRID SERVICE]: Region {0} ({1}) registered successfully at {2}-{3}", 
+                regionInfos.RegionName, regionInfos.RegionID, regionInfos.RegionLocX, regionInfos.RegionLocY);
+
             return true;
         }
 
         public bool DeregisterRegion(UUID regionID)
         {
+            m_log.DebugFormat("[GRID SERVICE]: Region {0} deregistered", regionID);
             return m_Database.Delete(regionID);
         }
 
diff --git a/bin/OpenSim.ini.example b/bin/OpenSim.ini.example
index fa8dc9db26..5cb51b28d9 100644
--- a/bin/OpenSim.ini.example
+++ b/bin/OpenSim.ini.example
@@ -312,7 +312,7 @@
     ; Uncomment below to enable llRemoteData/remote channels
     ; remoteDataPort = 20800
 
-    grid_server_url = "http://127.0.0.1:8001"
+    grid_server_url = "http://127.0.0.1:8003"
     grid_send_key = "null"
     grid_recv_key = "null"
 
@@ -322,7 +322,7 @@
 
     asset_server_url = "http://127.0.0.1:8003"
 
-    inventory_server_url = "http://127.0.0.1:8004"
+    inventory_server_url = "http://127.0.0.1:8003"
 
     ; The MessagingServer is a companion of the UserServer. It uses
     ; user_send_key and user_recv_key, too
diff --git a/bin/config-include/GridCommon.ini.example b/bin/config-include/GridCommon.ini.example
index 6607a1a369..3bc9b6ccdb 100644
--- a/bin/config-include/GridCommon.ini.example
+++ b/bin/config-include/GridCommon.ini.example
@@ -13,13 +13,13 @@
     ;
     ; change this to your grid-wide inventory server
     ;
-    InventoryServerURI = "http://myinventoryserver.com:8004"
+    InventoryServerURI = "http://myinventoryserver.com:8003"
 
 [GridService]
     ;
     ; change this to your grid-wide grid server
     ;
-    GridServerURI = "http://mygridserver.com:8001"
+    GridServerURI = "http://mygridserver.com:8003"
 
 [Modules]
     ;; Choose 0 or 1 cache modules, and the corresponding config file, if it exists.