From this commit and a few hours into the future ScriptEngine will be unstable:

* Speeding up ScriptEngine shutdown
* Sharing threads so that minimum total thread count for any amount of regions will be 2. (1 maintenance, 1 script execution)
You can choose more script exec threads if you want of course.
In this commit: Sharing maintenance thread between all regions.

OpenSim/Region/ScriptEngine/Common/ScriptEngineBase/iScriptEngineFunctionModule.cs

@@ -35,6 +35,6 @@ namespace OpenSim.Region.ScriptEngine.Common.ScriptEngineBase
     public interface iScriptEngineFunctionModule
     {
         void ReadConfig();
-        bool PleaseShutdown { get; set; }
+//        bool PleaseShutdown { get; set; }
     }
 }