http://bugs.winehq.org/show_bug.cgi?id=13335
--- Comment #61 from Roderick Colenbrander thunderbird2k@gmx.net 2008-06-27 11:52:02 --- Are you sure that the GL patch is also needed? It doesn't do anything special. If it does anything either the fbconfig is different but likely it triggers some wine workaround in the ati drivers.