Hey!, I' thinking of buying the higher end 21,5" iMac and got some questions. I heard that Sc2 is kinda sucky under Mac OS X, if I install win 7, will the fans work as the do in Mac os x? I know when I play on my macbook the fans stays at low...even when I play stuff, not good for heat Is this "fixed" on the imacs if I choose to play under windows? And second, How loud will it be player Sc2 or WoW (under mac os x?) or same demanding games. Also is there a issue with the screen on the 21,5"'s as well? I don't want that high pitched sound I've heard on some friends 27". Thank you !