Visual Studio 2012 / Resharper Unit Tests don't run

Question

I used to be able to run unit tests in VS 2012. Now, all of a sudden, whether I try to "Run" or "Debug" any unit tests, the Unit Test Sessions window puts the test into "Pending" status, but never actually executes it.

I've tried restarting my dev environment, even rebooting the computer. No change.

So where is the secret setting that says "Make unit tests freeze at 'Pending'"?

Answer 1

My answer in the comments was correct

Its a resharper issue - see here. Check if your Resharper and/or VS2012 versions are the ones affected