http://bugs.winehq.org/show_bug.cgi?id=24276
--- Comment #4 from Tobias Jakobi liquid.acid@gmx.net 2010-09-05 08:52:09 CDT --- Amazing, right at first guess. It was indeed S3TC, it was disabled through driconf ("Enable S3TC texture compression even if software support is not available" was off). When forcing it on the crash is gone and the game works flawless :)
Maybe we could add some sort of warning when S3TC is disabled? Especially when an open-source driver is detected.