Did the vendor use 2008(r2) prior to the move?

If so, there is a possibility that when they moved they didnt transfer all of the inbound external ports.  You may have been part of a redirect policy for your login and when they moved the policy is still pointing to the old server address.

Although this is not an Authentication issue, i think it is part of your Authentication.  Cause the server moved and now you cant access.  

SQL server moved, now can't use as linked server
I was using IE9 beta till now and installed IE9 RC today. However it starts crashing on 50% of the sites I visit. This also includes www.youtube.com. 

I did not uninstall IE9 beta before installing IE9 RC. Could this be the reason?

EDIT: I have uninstalled IE9 RC and installed it again after restart but that has not fixed this issue. 
