I'd appreciate some help with a problem that's appeared out of the blue (or ether). I have a G4/500 with OS 9.2.2 on the original hard drive and OS 10.2.3 on a second 80-gig drive. A week or so ago while in 9.2.2. (NOT Classic) my MS IntelliPoint Explorer mouse froze (I've been using it for several years without any trouble). I switched hub ports and everything resumed per normal. Today, the mouse froze again. Switching ports didn't help, nor did plugging it directly into the G4 or the keyboard. Nor switching to an Apple mouse. The mouse will resume working for a while after restarting, but eventually freezes, the intervals or operating time steadily decreasing. I reset the PRAM twice but that didn't seem to have any effect either. The only thing I've done differently in the last few weeks is to revert from an after-market extended keyboard to the Apple keyboard that came with the G4. Had I gone the other way around, I'd be more inclined to expect a problem. Anyone have any thoughts? Gary