Hey, I have an iBook G4 1.2ghz latest revision. Recently, I have experienced my expose going crazy - randomly sliding to the desktop over and over again in quick intervals, the screen darkness automatically decreasing to black, the eject button randomly being pressed, and multiple letters being pressed at random. It happens in bursts all at once. I know this sounds weird, but it has been happening more and more frequently, and Apple doesn't know what the problem is. Anyone have any suggestions? Thanks so much!