http://bugs.winehq.org/show_bug.cgi?id=22588
--- Comment #15 from Roderick Colenbrander thunderbird2k@gmail.com 2010-05-09 14:36:26 --- Can you look at the console in case the menu becomes unresponsive? Perhaps there is a threading related issue. I suspect that you will see some deadlock information in the console but it might take a minute or two to appear.