[Samba] Trouble Renaming Computer

[Les Stott]

Hi,

i've just migrated from nt4 to samba 3.0.10-1.4E.9 with tdbsam, running 
on Centos 4.4

The net rpc vampire went fairly smoothly.

Now that samba is running as the PDC (nt4 machine has been laid to rest) 
i am having trouble renaming computers in the domain.

If i try this from the windows workstation (XP Professional) i get 
access denied. I use "root" or administrator which is mapped to root as 
the account.

In the samba logs i get the following...

[2006/11/09 13:07:00, 0] passdb/pdb_tdb.c:tdb_update_sam(640)
  Unable to modify passwd TDB! Error: Record does not exist occured 
while storing the main record (USER_mareed-pc$)
[2006/11/09 13:07:17, 0] passdb/pdb_tdb.c:tdb_update_sam(640)
  Unable to modify passwd TDB! Error: Record does not exist occured 
while storing the main record (USER_mareed-pc$)
[2006/11/09 13:08:48, 1] rpc_server/srv_util.c:get_domain_user_groups(298)

Relevant Samba Group Mapping...

Domain Admins (S-1-5-21-138219912-1680474845-926709054-512) -> DomainAdmins

/etc/group shows.....
DomainAdmins:x:507:elinori,root

/etc/samba/smbusers
# Unix_name = SMB_name1 SMB_name2 ...
root = administrator admin


Is there something i am missing? What do the log errors mean?

Regards,

Les