I've got a Mac G4 running OSX 10.2.something, and lately it's been acting very very strange. Here's a list of the problems: When I go to the Apple menu and About This Mac, the Finder soft crashes and resets. When I try and shut down from the Apple menu, the Finder resets and won't shut down. The only way I can shut down is manually. When I try and upgrade to OSX 10.3, the CD is not accepted as a boot disc, even when I hold down C.