OK, so I've been having problems with my home desktop for several months now. I even bought a zippy new bare-bones system cuz I was due for one, and transferred a lot of the old hardware to the new machine. And I STILL was getting crazy crashes and dumb stuff happening. I could NOT figure out what the deal was.
I now have reason to believe it was the fucking MOUSE. I don't know how; I don't know why. But that's how it looks.