http://bugs.winehq.org/show_bug.cgi?id=17187
--- Comment #13 from Anton olaf_nz@hotmail.com 2010-07-29 02:15:16 --- I have no idea if or when it was a regression. My report just states that it is happening for me now (with these video drivers, hardware, etc).
Let me know if you'd like me to diagnose it further. It's totally reproducible.