[Samba] pdb_mysql + XP domain logons = no go

[xfesty]

Hiya...

I'm using Jelmer's pdb_mysql module for authenticating against a mysql 
database of users.

Having a wierd problem... basically, if I add a machine account into 
the mysql or smbpasswd (i.e. "passdb backend = 
plugin:/usr/local/lib/pdb_mysql.so:mysql smbpasswd" in smb.conf - using 
both), I can go to that XP machine, join the domain (root user), but on 
reboot it refuses to see the domain server, saying its not available 
for logins.

Currently machine accounts / root account are in smbpasswd, with normal 
users in the mysql db.  If I comment out the passdb line (so its back 
to the default smbpasswd), and restart samba, the XP machines can 
instantly see the samba server, and will authenticate it no problems.

Ack. :-(

I increased the log level to 3, but couldn't see anything in smbd's log 
that was relevant / different.

Any ideas? :-(

R