http://bugs.winehq.org/show_bug.cgi?id=14451
--- Comment #9 from Roderick Colenbrander thunderbird2k@gmx.net 2008-08-14 17:19:17 --- In various of the slow cases the display drivers might be running out of virtual memory which is caused by Wine. This can happen (at least we are aware of it on Ati boards) when the card has a lot of video memory.