password with samba 2.0.5

[Pierre-Yves DESLANDES]

I've tried but it doesn't work anymore.
So i can give you a my smb.conf :

# Global parameters
[global]
 workgroup = CONSEIL
 netbios name = BACKUP
 server string = serveur de sauvegarde
 security = SHARE
 encrypt passwords = Yes
 smb passwd file = /etc/passwd
 unix password sync = Yes
 domain groups = srvnt1.dom
 domain admin users = levilm
 admin users = levilm
 mangle case = Yes

[homes]
 comment = Repertoire personnel
 read only = No
 create mask = 0700
 browseable = No

[Commun]
 comment = Commun
 path = /raid/commun
 read only = No
 create mask = 0777
 guest ok = Yes