http://bugs.winehq.org/show_bug.cgi?id=21104
--- Comment #2 from Roderick Colenbrander thunderbird2k@gmail.com 2009-12-21 07:51:55 --- Created an attachment (id=25332) --> (http://bugs.winehq.org/attachment.cgi?id=25332) fix
Could you test if this patch fixes the issue?