GNOME Display Manger login problem using samba winbind

[Tom Pride <tpride dpiwe tas gov au>]

Gday, I'm trying to set up a linux pc that can use a username and 
password from a windows domain as the method of authentication when 
someone logs in. I am doing this using samba winbind and have almost got 
it, but the GNOME Display Manager (GDM) is giving me the following error 
in /var/log/messages when I try to login:
Jan 16 09:20:44 l8ip243 pam_winbind[6977]: user 'nttest2' granted acces
Jan 16 09:20:44 l8ip243 gdm-binary[6977]: Couldn't set acct. mgmt for 
nttest2

I really need to get this working as we are trying to setup a trial at 
my work of the new SUN Java Desktop (suse runing GNOME). If the trial is 
successful we can then work towards getting rid of Microsoft as the 
common desktop OS. Can anyone help or suggest where I can go for help?