A LOT of people seem to report never-before experienced problems with AE. However, there is a new place to submit problems that you feel are bugs:
I have no idea if Adobe responds quickly to the submissions.
If you're a longtime AE user, do you still maintain CS5 or 5.5 on your machine?
Yes that link is where I submitted my issues. However, I didn't hear back so I posted here.
Yes I have CS5 and still use it regularly. But since I am paying for CS6 I might as well get it to work correctly.
I hear you about getting it to work correctly. People who know computers inside and out seem to have few problems. If you lack a degree in Computer Science, or assume the new version will be as painless to install as previous versions, it can be a crap shoot.
This is speculation, but it seems that the newest version of AE was prepared in haste, lacking much of the normal care Adobe gives to fundamental problems. I hope you find a resolution to your particular set of woes.
The rest - yeah, CS6 sucks. We've heard all of it before and there are endless threads on the raytracing stuff as well as the flakey fast previews and cache.