http://bugs.winehq.org/show_bug.cgi?id=19708
--- Comment #5 from joaopa jeremielapuree@yahoo.fr 2009-08-12 16:44:21 --- NO!!! If the X server does not crash with the old version of Wine and crashes with the latest, that means that the new code in Wine reveals a bug in the driver.
By itself, Wine can not freeze the X server.
If you use Mesa driver, please report the bug to Mesa.