http://bugs.winehq.org/show_bug.cgi?id=22542
--- Comment #7 from Roderick Colenbrander thunderbird2k@gmail.com 2010-05-13 14:47:38 --- Created an attachment (id=27937) --> (http://bugs.winehq.org/attachment.cgi?id=27937) Fix
Give this patch a try. It fixes the issues here.