This is typically caused by improper DNS settings. There have been fixes in
the Service Packs. Try installing SP4, that has worked for me. Also giving
the user the "Owner" role on their ntuser.dat has worked for me as well.
--
Scott Harding
MCSE, MCSA, A+, Network+
Microsoft MVP - Windows NT Server
scrockel@***No_SPAM***hotmail.com