I'm running FF3 and Flash 10, and for some reason, when FF has be open for a while and I try and watch a video, it progresses for a few seconds and then the audio starts skipping like a broken record. I can seek past a few seconds, and it'll play another second and do the same thing. If I close firefox and reopen it, it'll be okay.
I've found threads about this problem in the past, but they were all with flash 9. I have "nonfree-plugin" installed. After this problem showed up, I tried also installing "nonfree-plugin-extras", but it didn't help.