Added request.Proxy=null everywhere, as discussed in http://stackoverflow.com/questions/2519655/httpwebrequest-is-extremely-slow.

Thanks R.Gunther (rigun@rigutech.nl) https://lists.berlios.de/pipermail/opensim-users/2012-September/010986.html

OpenSim/Region/OptionalModules/Avatar/Concierge/ConciergeModule.cs

@@ -386,7 +386,7 @@ namespace OpenSim.Region.OptionalModules.Avatar.Concierge
             updatePost.ContentType = "text/xml";
             updatePost.ContentLength = payload.Length;
             updatePost.UserAgent = "OpenSim.Concierge";
-
+            updatePost.Proxy = null;
 
             BrokerState bs = new BrokerState(uri, payload, updatePost);
             bs.Timer = new Timer(delegate(object state)

OpenSim/Region/OptionalModules/Avatar/Voice/FreeSwitchVoice/FreeSwitchVoiceModule.cs

@@ -541,6 +541,7 @@ namespace OpenSim.Region.OptionalModules.Avatar.Voice.FreeSwitchVoice
             forwardreq.Method = method;
             forwardreq.ContentType = contenttype;
             forwardreq.KeepAlive = false;
+            forwardreq.Proxy = null;
 
             if (method == "POST")
             {

OpenSim/Region/OptionalModules/Avatar/Voice/VivoxVoice/VivoxVoiceModule.cs

@@ -1119,6 +1119,7 @@ namespace OpenSim.Region.OptionalModules.Avatar.Voice.VivoxVoice
 
                 // We are sending just parameters, no content
                 req.ContentLength = 0;
+                req.Proxy = null;
 
                 // Send request and retrieve the response
                 rsp = (HttpWebResponse)req.GetResponse();

OpenSim/Region/OptionalModules/Avatar/XmlRpcGroups/XmlRpcGroupsServicesConnectorModule.cs

@@ -1150,6 +1150,7 @@ namespace Nwc.XmlRpc
             request.ContentType = "text/xml";
             request.AllowWriteStreamBuffering = true;
             request.KeepAlive = !_disableKeepAlive;
+            request.Proxy = null;
 
             Stream stream = request.GetRequestStream();
             XmlTextWriter xml = new XmlTextWriter(stream, Encoding.ASCII);

OpenSim/Region/OptionalModules/Scripting/RegionReadyModule/RegionReadyModule.cs

@@ -280,6 +280,7 @@ namespace OpenSim.Region.OptionalModules.Scripting.RegionReady
             WebRequest request = WebRequest.Create(m_uri);
             request.Method = request_method;
             request.ContentType = content_type;
+            request.Proxy = null;
 
             Stream os = null;
             try