This is probably old news to some of you, but I just ran into problems with Acrobat Pro (7.0.7) freezing after launch on my MacBook. The freeze was bad enough that I couldn't force quit and had to reboot. Anyway, the problem was apparently related to QuickTime 7.1...after doing a safe boot and updating to QuickTime 7.1.1, I'm back in business.
I don't know whether to blame Apple or Adobe...considering that Acrobat still takes forever to launch and is extremely sluggish on my MacBook, I think I'll blame Adobe