From Joel Eidsath, Mon May 1 09:05:21 2006
I've moved the (Epson 4180) scanner to use the motherboard USB. It's slower now, but should be more reliable.
Don't unplug it and plug it in somewhere else.
If there are problems because of someone plugged the cable in somewhere else (which they tends to happen when people run into problems), the UCs should plug it back in the motherboard USB port, and enter the Administrator password to the various "installing new hardware" popups that ask for it, then test the scanner again.