samba - Jan 2004 - third time logon from client removes administration rights

Hi,
I have this problem, where if I logon and off three times on a winXP
client I lose all administration rights on the third logon, and have to
restart the client workstation to get rights again. I have a stock fedora
core 1 samba install, and is running off of an openldap backend. If anyone
knows why this is happenning then please help me. If you need any more
info, be happy to provide.
Thanks alot.
Ned