Comment 5 for bug 604106

I've been plagued by this recently also. Only since the newest version of thunderbird (3.0.6) a couple weeks ago. Also using ATI proprietary fglrx driver. I am using full acceleration, and notice no problems anywhere else to my knowledge. I can't decide if it is an actual video 2d bug, video 3d bug, thunderbird only, or gnome theme bug.