Hi,
Another Retina User here. I was using v 5.0.3 on Mac OS X 10.8.2 and was getting constant crashes when starting applications that I assume were using Hardware-Acceleration under Windows 7 (e.g. Blender, Cinema 4D, Qt Application Demo).
Went back to 5.0.1 and haven't had a crash since. I am also running dual screen btw.