Issue when slowly scrolling down.

[kerunt]

Running 10.6.4.

Occasionally, when I scroll down (using the mouse) just a little bit at a time, the screen will jump UP, before scrolling down. This happens quite frequently, but not consistently. It's incredibly annoying.

I thought it was the mouse, so I replaced it with a new one (used to have a Microsoft "Comfort Mouse," now I've got the Mighty Mouse), and it's still happening. My guess is it's some kind of software issue.

Any ideas?

 

[kerunt]

Bump. Still happening, still driving me nuts. I'm even considering going back to Windows. Please don't let that happen.