Mac Mini crashes when connected to USB mouse!

This problem just happened all of the sudden--I came into my office a few days ago and there was the multi-lingual screen of death telling me I needed to restart my computer. Tried numerous times, no success--same message.
Took Mac Mini to Genius Bar--they said it checked out just fine.
Brought it home, plugged everything in--same problem!
Started eliminating USB and Firewire items that I was connecting to it. Narrowed it down to my Verbatim USB wireless mouse. When I disconnected it, the computer booted fine. However, can't navigate anywhere w/o a mouse, so I figured my solution was to just go buy a wired USB mouse.
Bought wired USB mouse. Same crashes! My computer will not boot with any USB mouse connected and when I connect a mouse after it is booted, it crashes the moment the mouse is connected.
Even if there is something I could install or uninstall, I can't do it because I have no navigation w/o a mouse!
Error messages on screen of death have to do with "kernels" and what not--again, if it was something I could replace/reinstall that would be great, but how can I do anything w/o a mouse?
Please help!!!
Thanks,
Phil

I have three 2008 model Mac minis, each with verbatim mice. Luckily one hasn't been upgraded to 10.6.8 because I'd be without a working desktop machine.
The 2010 Mac mini doesn't have this problem.
So far I've tried four different USB mice and all of them lock up the machine, even in safe mode.
I can't afford to go and buy three apple Bluetooth mice - it's the only way I can use these machines.
I hate downgrading machines, so I'm hoping apple supplies a patch soon.

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