http://bugs.winehq.org/show_bug.cgi?id=13820
--- Comment #17 from Evil wine@eternaldusk.com 2009-04-11 10:49:58 --- I can confirm that the "hangs on login" bug is no longer present with the current version of Y! Messenger and wine 1.1.19. We can probably close this particular bug.
There are, however many other bugs still to be fixed before it will be useable. For instance, it crashes when you try to send an IM. :) Also, none of the top menu items are present, etc...