Ron,
I am one of the ones who did a clean install, and so far, things are pretty good, but there are some bugs.
I saw Mitch Ives’ post about confusing dynamic playback quality as a bug as far as rendering type crisply, and I can’t get it to work, I have to set field dominence to none to get a clean image on tape.
I had a project freak out yesterday and I lost video capture mid project, also lost my audio waveform on track 1. I copied everything to a new project and that fixed it, but in 4 years and every version before 5 I never had to do this before.
I did notice a cool improvement in keyframe management today tho, in the keyframe editor on the timeline, you can now drag multiple keys all at once, very cool.