"So since the Quakelive switch to steam my game crashes constantly. Like every one to three matches. It just freezes and then I have to kill the process in the task manager. I asked someone what the message was when I dropped and he said "failed to authenticate with steam err.6"
I don't have this problem with any other game with steam.
Anyone else have this problem? What can I do?
Thanks in advance."

So the game still crashes. support@quakelive.com doesn't seem to care and I haven't seen any solutions eventhough several players have this problem.