I tried to upgrade my brother's MacMini PPC yesterday, which shares a display and keyboard with a generic PC. This worked fine under Tiger. For safety's sake, I cloned the PPC HD to an external FW drive, hooked this back up to the Mini and installed a Leopard upgrade over this to test for stability, since he has some shareware apps installed. On first reboot, I got a KP but thought nothing of this and restarted. All seemed fine. This morning, I restarted from the FW drive and it KPed as soon as the swirls appeared. It KPed too quickly for a crash log to be written, unless somebody knows how to extract one from Open Firmware, but the crash last night did get written to Logs and put the blame on USB. The KVM is the only thing directly plugged into the USB port. It KPs consistently at the same point in the boot up sequence. As my brother has another KVM he has been too lazy to set up so far, hopefully this will solve the problem. The FW installation is fine, as I plugged this into a spare Mini with the same specs without KVM and it booted up fine.