[Samba] WIn XP + Samba trouble

[David Frey]

I am trying to connect a windows xp client to a samba PDC.   The user
exists on the PDC and has an entry in the /etc/samba/smbpasswd file.  In
my smb.conf file, I have the following:

add user script = /usr/sbin/useradd -s /bin/false %u && /usr/bin/smbpasswd -a %u
add machine script = /usr/sbin/useradd -d /dev/null -g machines -s /bin/false -M %u && /usr/bin/smbpasswd -m -a %u

does that look right?

It seems to generate machine accounts in smbpasswd as well as passwd. 
The problem is when I try to add a domain user to the xp client, I get
the error:
The user could not be added because the following error has occurred:
The trust relationship between this workstation and the primary domain
failed.

I checked
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\Services\ControlSet\Services\Netlogon\Parameters\requiresignorseal
and it is zero

Can anyone help me?  I'm going insane.
-- 
David Frey  -  UVic Computer Science Student
GnuPG key available at http://chubby.dyndns.org/david_frey.gpg      
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