Allow up to 12 simultaneous connections to a given endpoint rather than 2

OpenSim/Region/Application/Application.cs

@@ -73,6 +73,7 @@ namespace OpenSim
             AppDomain.CurrentDomain.UnhandledException +=
                 new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);
 
+            ServicePointManager.DefaultConnectionLimit = 12;
 
             // Add the arguments supplied when running the application to the configuration
             ArgvConfigSource configSource = new ArgvConfigSource(args);