OS 10.3.9 on 1.67 ghz G4 laptop (aluminum). After start-up the delete key will not work or backspace in any program. (I have Microsoft 2004 as well as Adobe CS design suite, among others) After many minutes pass the delete key becomes active/usable but can revert to a noop status from time to time. This happens on every start-up and it's becoming a real pain in the ... Any help would be greatly appreciated.