A friend asked me the following. I didn't have a good answer, so I thought I'd ask you. Thoughts?

Iíve been using AppDomains as an approach to isolation Ė but I may be reaching the end of that so Iím looking at potentially spinning up worker processes and hosting the code in another process. Do you happen to know of any good guides/coverage for dynamically creating worker processes?
Any thoughts or insights are appreciated. As a note, my friend has been having an issue with a thread that keeps disappearing mysteriously within his app domain. It is running and then is just gone - everything about the thread is simply gone. As such, he is trying to find a different approach.

Thanks in advance!