http://bugs.winehq.org/show_bug.cgi?id=22400
--- Comment #6 from Roderick Colenbrander thunderbird2k@gmail.com 2010-04-18 14:18:13 --- Created an attachment (id=27445) --> (http://bugs.winehq.org/attachment.cgi?id=27445) Experimental fix
Give this patch a try. It might work. Also attach the same debug output as before but with this patch attached (so the d3d wgl log).