[Samba] WinXP user password not accepted - very strange !!!

[Miguel Medalha]

>
> If the user logs in with his password all works well. If he restarts 
> or shutdown his machine and tries to relogin the system tells him that 
> his username/password is not correct.
> If I reset his password @ Ubuntu with smbpasswd username and renter 
> the exactly same password, the user logs in successfully!
> This is the oddest thing. It appears as if this user's password is 
> "canceled" every time despite the fact that the user has never changed 
> his password during this period of time.
>

I once had that problem with one computer. I solved it by unjoining and 
then joining it again to the domain.