http://bugs.winehq.org/show_bug.cgi?id=18572
--- Comment #3 from Dmitry Timoshkov dmitry@codeweavers.com 2009-05-23 23:30:04 --- Google finds quite a bit of info for "application bug race in msg_peek", in particular http://savannah.gnu.org/bugs/?25418 explains a similer bug in wget, and basically it boils down to calling recv(,MSG_PEEK) followed by recv(,0).