* Releases the inter-region thread synchronization between physics in ODE on the same instance.

* If you are hosting many regions on a single instance, you will probably notice a decrease in region startup time and maybe a slight increase in performance.
* Single regions won't notice anything different

OpenSim/Region/Physics/OdePlugin/OdePlugin.cs

@@ -242,7 +242,7 @@ namespace OpenSim.Region.Physics.OdePlugin
         // split static geometry collision handling into spaces of 30 meters
         public IntPtr[,] staticPrimspace;
 
-        public static Object OdeLock = new Object();
+        public Object OdeLock;
 
         public IMesher mesher;
 
@@ -259,6 +259,7 @@ namespace OpenSim.Region.Physics.OdePlugin
         /// </summary>
         public OdeScene(CollisionLocker dode)
         {
+            OdeLock = new Object();
             ode = dode;
             nearCallback = near;
             triCallback = TriCallback;