How to use an AppDomain to limit a static class' scope for thread-safe use?

Question

I have been bitten by a poorly architected solution. It is not thread safe!

I have several shared classes and members in the solution, and during development all

Answer 1

Creating and tearing down an appdomain for each call - I take it you're not worried about performance on this one?

Ideally you should change the called code to be threadsafe.