http://bugs.winehq.org/show_bug.cgi?id=20554
--- Comment #25 from Roderick Colenbrander thunderbird2k@gmail.com 2009-11-11 03:00:08 --- Adding a patch which would disable XRender for 16-bit is not an option. For most other apps the 16-bit patch gives a nice speedup. I'm not sure but I guess the reason it worked before is that we used no (?) access traps because the depths were different but I'm not sure (that's the only thing I can think of why it would have worked).