http://bugs.winehq.org/show_bug.cgi?id=27153
--- Comment #11 from ZfM zeroz@users.mns.ru 2011-05-14 17:45:34 CDT --- (In reply to comment #10)
fixme:advapi:RegisterEventSourceW ((null),L"Bonjour Service"): stub
Do you have iTunes installed, perhaps?
I had. But how can it affect on the Steam installation?