I am running the latest Snow Leopard OS on a 1.83 GHz Macbook Pro. When I open a .mov file to play, Quicktime X opens and the video plays in slow motion with the normal audio speed. It does it to all my videos (I have a lot). BUT when if I force the videos to play in Quicktime 7 they play just fine. On my iMac the videos play in Quicktime X just fine. Last night I did a fresh install of Snow Leopard on the MBP hoping it would fix the problem but it still persists! Any thoughts?