On Chrome and FF4, I've noticed, briefly while owning the 2010 15" and now my current 2011 15" that Chrome has problems loading youtube. The yt window where the video should be fails to load, although audio will come up. The window behind it or the desktop will be visible "through" the place where the video should be. A quit out of chrome and reload fixes this, but happens often. So I switched to FF4 the other day and probably maybe 1/8 times I open a new youtube video, say from a link and into a new tab, FF crashes. It will just beachball until I force quit FF. I've updated to the latest flash from adobe. I have not bothered with Safari yet. Any ideas? Is it with the graphics switching that's messing with it? I use the gfxCardStatus app. I also use flashblock extension on both browsers but youtube is whitelisted. Thanks in advance.