samba - Feb 2006 - samba domain problems

Hi All,
 
Im still trying to authenticate some of the samba shares to a win2003
sbs server. I succesfully added the samba pc to the domain. 
Shares with no VALID USER  key are accessible from all pc's.
 
Now ive made a share which should ask for a username and password.
 
[share]
        path = /raid/map
        writable = yes
        read only = no
        valid users = (domainuser_1, domain_user_2 )

The complete samba config is : 
 
 
 
[global]
        netbios name = DATASVR
        server string = DATASVR
        socket options = TCP_NODELAY SO_RCVBUF=16384 SO_SNDBUF=16384
        idmap uid = 10000-20000
        idmap gid = 10000-20000
        winbind enum users = yes
        winbind gid = 10000-20000
        workgroup = TEST
        os level = 20
        winbind enum groups = yes
        socket address = 10.0.0.200
        password server = *
        preferred master = no
        winbind separator = +
        max log size = 50
        log file = /var/log/samba/log.%m
        encrypt passwords = yes
        dns proxy = yes
        realm = TEST.LOKAAL
        security = ADS
        wins server = 10.0.0.201
        wins proxy = no

 
If, on windows i select the share with the password, i get a password
popup screen, but nothing i type is accepted.
Ive tried   DOMAIN\domain_user & password, and domain_user  & password,
but none of the options are OK.
 
 
*  net-fs/samba
      Latest version available: 3.0.14a-r2
      Latest version installed: 3.0.14a-r2
      Size of downloaded files: 15,420 kB
      Homepage:    http://www.samba.org/
http://www.openantivirus.org/projects.php
      Description: SAMBA is a suite of SMB and CIFS client/server
programs for UNIX
      License:     GPL-2
 
This is what shows up in the logs when i make connection to the
non-passwd shares.....
 
[2006/02/20 10:02:27, 1] smbd/service.c:make_connection_snum(642)
  10.0.0.1 (10.0.0.1) connect to service ariston initially as user
DOMAIN+domainuser (uid=10015, gid=10000) (pid 9483)
[2006/02/20 10:02:32, 1] smbd/service.c:make_connection_snum(642)
  10.0.0.1 (10.0.0.1) connect to service datasheets initially as user
DOMAIN+domainuser (uid=10015, gid=10000) (pid 9483)
[2006/02/20 10:02:38, 1] smbd/service.c:make_connection_snum(642)
  10.0.0.1 (10.0.0.1) connect to service drivers_apps initially as user
DOMAIN+domainuser (uid=10015, gid=10000) (pid 9483)
 
seems ok.
 
Nothing shows up in the logs about the denied access to the protected
shares.
 
How can i check whats going wrong. ????
 
Thanks 
Martijn