* Cache packed throttle data to avoid repeated allocations in CheckForSignificantMovement()

* Removed a lock on "return m_neighbours.Count" in GetInaccurateNeighborCount(). Dictionary<>.Count by itself does not benefit from locking

OpenSim/Region/Framework/Scenes/Scene.cs

@@ -1132,10 +1132,7 @@ namespace OpenSim.Region.Framework.Scenes
 
         public int GetInaccurateNeighborCount()
         {
-            lock (m_neighbours)
-            {
-                return m_neighbours.Count;
-            }
+            return m_neighbours.Count;
         }
 
         // This is the method that shuts down the scene.