http://bugs.winehq.org/show_bug.cgi?id=24064
--- Comment #43 from Jerome Leclanche adys.wh@gmail.com 2010-09-28 12:38:31 CDT --- (In reply to comment #42)
TF2 was never affected by the GetMessage* problem, it doesn't seem to call the function. When does Portal crash for you? During early startup before showing it's window / changing the screen resolution or somewhen later? Can you start the dedicated server apps successfully and open a server?
On world load, just like TF2. Menu screen is fine. This is probably a different issue to the GetMessage issue, but this bug is linked in all the steam games appdb so it's probably best to just keep it here.
I've never used the dedicated servs though, so can't say about that.