http://bugs.winehq.org/show_bug.cgi?id=29344
--- Comment #8 from nimrod@fet.at 2012-03-25 08:16:36 CDT --- Oh, sorry for the typo in my comment, I used "winetricks wsh57" of course :)
But thats not the point, it didn't solve the problem. Installing ie7 did the trick. But ie7 comes with a lot of additional packets so it's still not easy to say what resolved the issue.