Win7 wont authenticate all the time

I had VISTA on my laptop and is was "working" normally, I got the final release on win7 in the my monthly update from MS and proceeded to install it. All went according to plan and it seemed to be ok. Ran the updates joined the domain and installed our AV. Now here is where the problem starts, it does not authenticate properly all the time, sometimes it does and other it just sits there saying authenticating and does nothing and of course I can't access jack. This was not the case in the beta however I did see this in the RC1 release and proceeded to dump 7 in hopes this would be fixed and of course it seems it's not. Anyone else seen this issue?

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