Problem with connection to computers with RWW on SBS 2003

[killcity]

Hi all,

I have SBS 2003 server running remote web workplace. Until last week all users could connect to their desktops from home via remote web workplace. But now, none of them can. If I VPN in to the server I can connect to the computers via terminal with in the network but if I try through RWW I get this message. The client can not connect to the remote computer. Remote connections might not ECT (RDP is allowed on all the computers) computer might be to busy ( no when testing computer is on and ready for me to logon.). I have checked that all services are started, also restarted remote connection and routing and I can see nothing that has changed for this to happen, sorry one thing has changed the admin password.
I have looked at and tried everything I can think off.
Restarted server
Stopped and restarted nearly every service on the server.

Does anyone know if there has been an update that might have been applied automatically that could have caused this?

All the desktop PCs are XP Pro SP2. All were accessible.

If anyone has ANY ideas, I'd be grateful.
Many thanks Steve