Firefox render issue

Hello.

Since I installed openSUSE 11.2 64bit on my new ThinkPad SL 500 (not classic ThinkPad at all), in latest Firefox, some elements (boxes) on some pages are displayed with black edges (see attached screenshot, depends on zoom).

on KDE desktop
firefox version: 3.5.5-1.1.2,
screen resolution: 1600x1050

Is this forum right place (i’m just trying to report issue) ?

Thanks for info.

http://i46.tinypic.com/4gptn7.jpg