My problem is that when I play a quicktime movie online (example:ipod add on www.apple.com/itunes) once it buffers a second it starts to play but I only get audio. Once the entire video loads I then refresh the page. Only then can I see and hear the video. This happens on my new MacBook Pro and my aluminum iMac. I have taken my macbook to the genius bar twice and they can't seen to fix it. I've also sent it in to apple care but they don't seem to see the problem.