Ahhh I am torn. When given a video card update (esp from using windows) it almost always improves the video card. Apple releases the flicker fix update and I don't have a flicker issue. No screen issues at all really. I feel like it's Russian roulette. Update or not? I know some people will say don't fix what ain't broke, but what exactly is IN the fix? Is it exclusively for the flicker issue or does it update/upgrade other aspects on the card? Mine has the ATI card in it. Any advice?? cheers!