Fixed collision error with threaded access.

OpenGrid.Framework.Data.DB4o/DB4oGridData.cs

@@ -40,6 +40,8 @@ namespace OpenGrid.Framework.Data.DB4o
         }
 
         public DataResponse AddProfile(SimProfileData profile)
+        {
+            lock (manager.profiles)
             {
                 if (manager.AddRow(profile))
                 {
@@ -50,6 +52,7 @@ namespace OpenGrid.Framework.Data.DB4o
                     return DataResponse.RESPONSE_ERROR;
                 }
             }
+        }
 
         public bool AuthenticateSim(LLUUID uuid, ulong handle, string key) {
             if (manager.profiles[uuid].regionRecvKey == key)