Hey guys my mac does everythimg right, naturally, but if I try to watch a video in full screen it will eventually exit full screen on its own. And, if I put it back in full screen it will exit again, usually several times in a row. Then it will start working fine. I can't imagine it being a problem related to any settings... but I have a feeling it has something to do with time machine backups. Also, it does this with everything; netflix, itunes, youtube, videos from google, comedy central, the daily show. Whats wrong guys?