I posted this in the Basic and help section but i thought this would be better. I tried to play Surrogates this morning. It was purchased from the iTunes store and wont play now but it did in a couple of weeks ago. After the error appeared i tried another bit of HD content but that didnt work either and that was last played on Feb 3rd, so that rules out the iTunes 9.0.3 update right? Next i thought about the cable so i switched from DVI to HDMI connection to my Acer H233H but i believe the monitor is unrelated to the problem since HD content did not play on my Samsung or Sony HDTV's. Finally after calling 1-800-MY-APPLE (they had no idea by the way, i was passed to various different guys and they said to go to the apple store for testing) I decided it must be an apple update from the past 2 weeks that has altered my DisplayPort. Anyone else got any better ideas? or the same experience?