Jumpy scrolling with Word, Bridge

Has anyone noticed jumpy scrolling, when using the two-finger trackpad scrolling technique, in Microsoft Word, Adobe Bridge, or any other application? Scrolling's fine in most other applications, but in Word and Bridge it's pretty broken. The application gets the scrolling input, but if I just scroll slowly and steadily down the page in Word, the document will jump up and down very quickly and actually scroll UP, to the point where if I continue to scroll down, I'll end up at the top of the page. Same problem with Bridge, trying to scroll sideways in the filmstrip view. If I try to quickly scroll to the bottom, I can make some forward progress, but at the expense of accuracy. It's basically worthless. 😟

Scrolling with a USB mouse works fine.

Both Word and Bridge look to be "older" applications using Carbon, rather than Cocoa (at least I think that's the difference; they still use the watch cursor instead of beachball or other progress indicator), and they're both PowerPC-native and using Rosetta. Not sure if either of these might have a bearing on the problem.

Has anyone else experienced this problem and found a fix?

Apple this is a serious issue and you MUST address it ASAP! (Kidding folks, I'm just kidding! 😉 )