http://bugs.winehq.org/show_bug.cgi?id=7772
--- Comment #5 from Austin English austinenglish@gmail.com 2008-01-29 12:16:42 --- (In reply to comment #4)
i started getting hard X lockups one one account, and crashes on the other. i'll do some extra investigating, and reply soon.
More than likely buggy video drivers. A normal user cannot lockup/crash X. Only root (or something running as root) can do this.