It's same for all user.
I have tried via a Win7 workstation and directly on the server.
Only directly on the server and with Opera I was able to login (NTLM) and using TP.
Opera works also remotley, but I have still the problem with the scrambled data,
see ticket http://www.telerik.com/account/support-tickets/view-ticket.aspx?threadid=466163
I think it's not related directly to TP, could be some policy settings or other configuration.
But for all that, I need to mention that all the other apps and webs on the server are working fine.
So I'm not sure if you are really able to help.