http://bugs.winehq.org/show_bug.cgi?id=11686
--- Comment #1 from Austin English austinenglish@gmail.com 2008-02-22 13:56:15 --- Are you attempting to run wine as root? Wine can't kill X (wine is a user process) unless running as root. More than likely you've got buggy video drivers or something else running as root causing this problem...