http://bugs.winehq.org/show_bug.cgi?id=22203
--- Comment #6 from Johannes Bauer jb.imm@gmx.de 2010-03-31 05:25:37 --- Wow, this is weird: When I start with WINEDEBUG=synchronous, the 1 in 20 phaenomenon is gone - the setup program start up *every* time as it is supposed to. However, it still crashes about 70% into the installation, the backtrace is attached.
Seems like some kind of race condition which does not occur when the debugging slows down wine?