http://bugs.winehq.org/show_bug.cgi?id=24990
--- Comment #2 from Alexey Loukianov mooroon2@mail.ru 2010-11-02 02:07:42 CDT --- A big surprise: setting WINEDEBUG=+mixer magically heals segfault. Looks like that there's some link between segfault and contents of WINEDEBUG env. Will investigate some more and report afterwards.