I have been keeping up to date with all the software revisions and what not, here's my issue... When I'm watching a video or on a webpage of a video that's either being streamed or on my hard drive (rules out web issue) when the window is not selected as on top of the other apps, the video gets choppy, real choppy. Where I notice this is if I'm watching a DVD or playing a Quicktime Video off my hard drive and I open my ADIUM app, when I am sending an IM (the top window on the screen is Adium rather than Quicktime), the video get's choppy. I also just noticed it when I was on myspace, one of the advertisements was an animated image and when I switched to an instant message window, the ad got all jerky rather than the smooth flow it was before... Anyone know if this can be remedied? Thanks!