Hi and evening all. After having a look on google for quite a while I cant find anything directly related to the question im about to ask... When I view quicktime videos on web pages on my mac and scroll up and down the page it all gets a bit laggy/choppy. What puzzles me is that on XP Boot Camp its perfectly fine. A good example would be a HD movie from gametrailers.com http://www.gametrailers.com/player/29027.html On my mac it lags . On windows BC it is perfectly smooth. Same thing also happens if im on msn (on OS) and have a message waiting - therefore the icon at the bottom of the screen jumps up and down - it will lag badly (if im typing in any application) if i dont click on the message and just continue using fireFox. Ive also tested this all out with Safari and the same occurs. Quicktime and adobe Flash are up to date. This has always been the case. I can use fairly big programs like imovie with no problem. Any ideas?