I just saw the dreaded Vista in your signature so gave you that path ;D

Unfortunately much of your forum profile (including your signature) is locked until you have 20 posts.

The problem comes from drive by spammers, who having registered put objectionable or commercial links in their profile signature to try and gain link promotion, etc.

There have also been cases of the PM function being abused to spam forum members, so you will notice that you can’t use the PM function either.

Unfortunately because of the actions of others, legitimate members suffer by the actions to prevent this spamming.

Whilst based on the behavior shield log not showing anything blocked, I don’t know if that is what is stopping it; you could try settings the behavior shield to Ask rather than Auto and see if it at least throws up any pop-up. I might be that during the time that it is examining the function the steam connection, etc. fails.

You will have to excuse me as I have zero experience of gaming/steam.