Has anyone had this problem before? On a new mirrored drive G4 1 Ghz, the optical mouse just up and stops working with the keyboard. I've had this problem with using an older keyboard with the mirrored towers where the optical mouse plugged into an older keyboard will not work. But I just got into work and a co-workers mouse on her G4 just up and stopped working. We've restarted numerous times, switched USB ports in the back tried different mouse setups and configs (i.e. using old keyboard with new mouse, etc.) But what ended up working was using an old hockey puck mouse with a new white keyboard. If anyone has any workarounds or hotfixes, please let me know. Thanks in advance!