The application is OpenSimulator, server for virtual world applications. "http://opensimulator.org" and many of the threads are scripts running objects running in the "world". I intentionally made objects using timed events and sleeps to accelerate the crashes. I'm not sure how to replicate the issue outside of OpenSimulator. But, I would gladly provide any assistance needed to bring up an instance. I will see if it happens in a VM and post the results back here. If it does, then maybe that would help? Thanks