I noticed that the "New message"-indicator isn't working correctly when I'm in the home page.
You see I have read the message and when I'm in the forum the indicator shows 0 new messages.
However when I'm in the home page it shows 1 new message, the one I already have read.
For my part it's not much of a problem at all however I've got the impression that you are using your own forum software, G-face? Since it's a bit buggy because it's new. Just noticed that it says on the bottom of the page that the forum is powered by Gface, haha . That's very cool. I like that about Crytek, you create many tools. That way you can make them better and use your own tools without needing a license. Great strategy.
Thought this could help you make it even better.
Hope this helps, have a nice day.