http://bugs.winehq.org/show_bug.cgi?id=9771
--- Comment #118 from Erik erik.welander@hotmail.com 2008-09-20 09:05:04 --- Steam friends now works! :)
I were playing CS:S when suddenly messages starting to appear in from steam. So i joined the chats and could chat without problems. i sill however don't get any sound when i receive a message. But they pop up in the right as they should do. I must have the "friends" window open for it to work. btw, not that it should have anything to do with it, but i am using the flat - obsidian skin.
Wine 1.1.5 Fixed it! :)