I discovered the problem with the keyboard switch. One of the sys admins here said that it has to maintain the power -- both this new keyboard switch and the old one lose the power when switching. Do you know where I could buy a keyboard switch that maintains the power when switching? The symptom is that the keyboard gets screwed up and the keys get messed up etc. I end up having to unplug and plug it in each time I switch. I have a warantee on this keyboard switch and I can take it back within 90 days on purchase. (At least, I hope so -- it'd be better if you got back to me soon about this.) I think I'll give you a call.