Comment 4 for bug 292282

Completely removed driver 173, tested with only 177 installed and active:
 - No noticeable change.
Disabled 177 and switched to NV driver:
 - Effect (seemingly) _diminished_, but perhaps only very slightly, or maybe I've just been staring at it too long.
Completely removed all traces of Nvidia and switched to NV driver:
 - Again, somewhat lessened, but still pronounced enough to be noticeable even when not scrutinizing it.
For kicks, I also tried the Vesa driver:
 - No improvement.

Not using Nvidia drivers means I can't use Compiz, so I've reinstalled the latest driver in Synaptic (177) and reactivated Compiz for now. Firefox is my browser of choice because it's just all-around awesome. This tiny flaw is not enough to force me away from either Mozilla (I use Thunderbird as well) or Ubuntu, but testing other browsers and applications seemed to indicate (from my POV at least) that it's Gecko-related. That's the only reason I'm reporting it. It's an annoying but non-critical issue for me.

I'll try to get around to doing some screen vids later today and see if the problem can be captured on video.
Thanks for the quick reply.