http://bugs.winehq.org/show_bug.cgi?id=21367
--- Comment #6 from Austin English austinenglish@gmail.com 2010-01-15 10:42:33 --- (In reply to comment #5)
(aside: why do I have to enter my login credentials on every single commit, upload operation, ... in the bugtracker? is this a bug?)
A few people have reported it, seems to be a cookie/cache issue. Try clearing them.