I've seen that with a stuck key as well as when someone installed keyboard or mouse "drivers". Since we don't load such at the office, only "TECH" ever sees that, except when you find a stuck key. Test? Unplug the keyboard.
Any scrollable window (i.e. in Firefox, IE, even my winamp playlist) scrolls around of it's own accord. I've never seen anything like this. It makes navigation impossible.
I ran a virus scan. Then in firefox, when I tried to come here and post, the browser went backwards through my page history very rapidly, ending at google, my homepage.
For a while I was suspicious that someone was messing with me via a trojan, but those are fairly easy to detect.
This is the strangest thing I've seen in a while. Any light anyone can shed is appreciated.