I just updated VS2012 with Update 4 and after that, everytime I opened a project in VS, VS simply froze (only after I open a project the problem occurs).
Since I was using R# 8 EAP (188.8.131.52) I thought "well, maybe it's something in R#. I uninstalled it, and voilá, VS2012 was working ok again. But since I'm already addicted to R# I wanted to have it with a working version of it... I tried to install v8.0 final and it is working.
I'm on Win8 Pro x64 if that might help.
Has anyone experienced the same thing?