[Samba] can't connect to samba.

[Meli Marco]

By I have uninstall old samba version and save and replace old
/var/lib/samba/*.tdb files on new one I can't access to my samba box with
new user created on NT server.
The old user works fine again but if I create a new user and connect to
domain and dbclick on samba-box it ask me user&password.
The authentication is via winbind, is possible that any *tdb files is
corrupted?
Thanks,
Marco.