| Yeah, I did actually. The basic outcome was that some USB devices didn't quite follow the USB spec, and produced out-of-whack timing. nVidia's solution, if the device was a USB1.1 device, was to plug the device into a USB2 hub, and let that retime the signal.
Personally, I prefer using PS/2, as the PS/2 hardware can buffer data if the processor gets too tied up. With USB, if the processor doesn't poll the USB devices, data can go missing.
Also, I'm not sure what the status of the USB drivers under Linux is. Last time I looked, the USB module would load, but wouldn't actually support the USB ports.
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