VS 2010 Test Runner error “The agent process was stopped while the test was running.”

Question

In Visual Studio 2010, I have a number of unit tests. When I run multiple tests at one time using test lists, I sometimes reveive the following error for one or more of the

Answer 1

This error was caused by a Finalizer for me as well.
The Finalizer was actaully calling some DB code which wasn't mocked out. Took me a while to find it as it wasn't a class I wrote and the reference to it was burred quite a few classes deep.