Question : windows xp pro freezes when attempting to rdp into.

Unable to remote desktop into an XP Pro workstation. When I try it freeze remote computer. If I try to login with a different user say Administrator it will log out current user and then freeze on the login screen. The login screen on the local computer also freezes. I have to kill the RDP  session to end it.
The Problem computer can start RDP sessions with all computer on LAN and WAN and the Problem computer freeze on all LAN / WAN computers. All AV software has been removed from Problem computer and the event logs show no warns or error during the event. The problem computer must be Hard boot to bring back on line.
Good luck and thank you.

Answer : windows xp pro freezes when attempting to rdp into.

http://www.microsoft.com/technet/security/bulletin/MS09-006.mspx

Is this installed? Seen reports of this causing your issue, and a fix was to update the NVidia Drivers (if applicable)....