[Samba] Windows 7 + Samba domain issues

[Alex Ferrara]

Just for completeness, when I successfully join the domain I get the following in /var/log/syslog

Dec  7 19:50:33 percy slapd[2514]: conn=219 op=6 do_bind: invalid dn (NTLM)
Dec  7 19:50:33 percy slapd[2514]: conn=220 op=6 do_bind: invalid dn (NTLM)
Dec  7 19:50:34 percy dhcpd: DHCPREQUEST for 192.168.0.114 from 00:1c:c0:57:b4:9d (AC-1391) via eth0
Dec  7 19:50:34 percy dhcpd: DHCPACK on 192.168.0.114 to 00:1c:c0:57:b4:9d (AC-1391) via eth0
Dec  7 19:50:34 percy slapd[2514]: conn=218 op=27 do_search: invalid dn (sambaDomainName=,sambaDomainName=DOMAIN,dc=domain,dc=local)

and I get the following in the machines samba log

[2009/12/07 19:50:34,  0] passdb/pdb_get_set.c:210(pdb_get_group_sid)
  pdb_get_group_sid: Failed to find Unix account for ac-1391$
[2009/12/07 19:50:41,  0] smbd/map_username.c:140(map_username)
  can't open username map /etc/samba/smbusers. Error No such file or directory
[2009/12/07 19:50:41,  3] auth/auth.c:222(check_ntlm_password)
  check_ntlm_password:  Checking password for unmapped user [DOMAIN]\[AC-1391$]@[AC-1391] with the new password interface
[2009/12/07 19:50:41,  3] auth/auth.c:225(check_ntlm_password)
  check_ntlm_password:  mapped user is: [DOMAIN]\[AC-1391$]@[AC-1391]
[2009/12/07 19:50:41,  0] passdb/pdb_get_set.c:210(pdb_get_group_sid)
  pdb_get_group_sid: Failed to find Unix account for ac-1391$
[2009/12/07 19:50:41,  1] auth/auth_sam.c:178(sam_account_ok)
  sam_account_ok: Account for user 'ac-1391$' password expired!.
[2009/12/07 19:50:41,  1] auth/auth_sam.c:179(sam_account_ok)
  sam_account_ok: Password expired at 'Mon, 07 Dec 2009 19:50:34 EST' (1260175834) unix time.
[2009/12/07 19:50:41,  3] auth/auth_winbind.c:54(check_winbind_security)
  check_winbind_security: Not using winbind, requested domain [DOMAIN] was for this SAM.
[2009/12/07 19:50:41,  2] auth/auth.c:320(check_ntlm_password)
  check_ntlm_password:  Authentication for user [AC-1391$] -> [AC-1391$] FAILED with error NT_STATUS_PASSWORD_EXPIRED

aF