http://bugs.winehq.org/show_bug.cgi?id=21870
--- Comment #27 from edward savage epssyis@gmail.com 2010-10-05 17:46:03 CDT --- (In reply to comment #26)
I can now purchase games in Steam on an unpatched wine 1.3.4.
From the conversation here it seems that the patch was never committed to the main git repository, so I don't know how that can be. It might be that something changed in how Steam implements it's payment procedure.
Juan Lang made a bunch of commits (just before 1.3.4) regarding how browsers deal with security. I was wondering if it would help but didn't have a chance to check. I'll install a clean wine dir tonight and confirm this is fixed. Will be great if it is!