I'm using Visual Studio 2012 Update 4. I'm currently writing a WPF application. When I Debug-Run the application the first time it starts ok. If I stop it and try to run it quickly again it sometimes runs but often doesn't do anything except the fans on my laptop start getting noisy because of a sudden spike in CPU caused by devenv.exe. Once it calmed down I can try again and it will work.
I tried disabling various add-ons like Resharper but it didn't make a difference. Running VS in Safe Mode also didn't make a difference. Anybody any idea what causes this strange behaviour and how to fix it?