Help I have a PowerBook G4 and my Desktop just started floating around as I move my cursor. I don't know if this has anything to do with it but I rebooted and ran the File Vault. (I'm not an expert on hardware by any means!) When I rebooted, now my menu bar across the top of the page is only 1/2 visible. When I move my cursor to the top of the screen, the full menu bar appears. As I move my cursor around my Desktop, the whole Desktop image moves around also. I almost have to chase things down. The dock at the bottom of the page is working properly. Thanks for any assistance!