For the update of OS X 10.6.5 coming pretty soon I hope. They said they are addressing a fix for graphic bug. I am wondering if they are going to fix FireFox / Chrome or other browser which will trigger graphic switching to NVIDIA GPU and stuck there as long the browser app remains running. It is not like Safari which works completely seamless switching only when needed like HD youtube and on SD youtube it will switch back to Intel. Other app won't, that is the current problem with 10.6.4 and we are force to use gfxCardStatus app to lock the switch mode on the go. I'm just curious. If it is the fix for this, glorious!