server (?) crashes

[Paul Kaplan]

I'm running realvnc as a service on XP and trying to connect from within my 
home lan from another box.  When the XP screen comes up on the other box, I 
always get the fast user switching screen, whether someone is working on XP 
or not.  If someone is in an account, they get kicked out to the FUS screen.  
When I then try to login to any account on the XP box from the other machine, 
the vnc client crashes, so I can't actually get to an XP desktop.

Help please.
Paul