Hello all. I had an issue installing the GMA4500 kext causing my mouse cursor not to move. The mouse works, but the cursor doesn't it. It is like the mouse position and pointer are not connected. Anyway, I re-installed everything so I am back to the resolution issue. Can someone explain to me how the GMA4500 kext can effect the mouse. I mean aren't these kexts for the video? I guess I am just trying to get a better understanding of osx so that I may be able to make copies of some files before installing the GMA4500 kext, then just restoring them.