iMac G5 with a standard USB keyboard.
My delete key (the one under the 'help ' key and not the backspace one at the right end of the numerals) has suddenly stopped functioning. It will work perfectly if you press 'Shift delete' but not if the 'Caps Lock' is activated.
Everything else seems fine. The only thing I have done software wise over the last couple of days is install Quicksilver (but I'm sure it was working after this) and download the Apple update of 'Backup' as part of the routine 'Software Updates'.
Any ideas?