Windows 7: Live messenger Beta problems.

Hey.
About an hour ago my MSN keeps signing itself out making have to sign in again, its becoming extremely annoying. I know someone hasn't gained control of my live account as i have changed my password.
I think its a weird bug as whenever i try to message somebody it also signs me out.
Any solutions people?

I know this post is old but, I was wondering if you managed to fix the problem? I have the same problem and no matter how much restarting I do of Windows 7 it still happens and even more curiously is, when Windows Live Messenger beta disconnects and reconnects, it affects my internet as well. When I close messenger I can use the internet normally but, while messenger's on and having problems I can't go on the internet :s

Anyway I hope you found a solution to the problem and I'd if you have I'd love to know what it is