Joining NT Domain

[DavidAtkinson at solectron.com]

Hi guys,
here's a quick one (I hope). I get :

[root at ariel david]# smbpasswd -r bgntpdc -j bgnt
tdb(/etc/samba/secrets.tdb): tdb_lock failed on list 103 ltype=1 (Invalid
argument)
Unable to write the machine account password for machine ARIEL in domain
BGNT.
[root at ariel david]#

I have created the account in the domain. Am I using the correct smbpasswd
command ?