Chris, I'm one of the Firefox i865G users affected by this bug (xf86-video-intel 2.99.911).
I have noticed that when I set UXA (or none) as acceleration method, Firefox renders the text correctly. And (using SNA) when setting gfx.xrender.enabled to false in Firefox, the bug goes away.
Created attachment 99710
Xorg.0.log for i865G
Thanks Christopher for opening this report.
Chris, I'm one of the Firefox i865G users affected by this bug (xf86-video-intel 2.99.911).
I have noticed that when I set UXA (or none) as acceleration method, Firefox renders the text correctly. And (using SNA) when setting gfx.xrender.enabled to false in Firefox, the bug goes away.