[Samba] directory ACL dont work

[SIN - Rudolf Beranek]

i have a problem with the acls in directories. i use samba 3 and windows
2000. when i change die permissions on a file the acl is also change on
linux (suse 9.0). but when i change die permission in a directory it fails.

my smb.conf:

[global]
    workgroup = SUNNY
    domain logons = yes
    os level = 32
    preferred master = auto
    local master = yes
    preferred master = yes
    interfaces = eth0
    username map = /etc/samba/username_map
    map to guest = Bad User
    disable netbios = yes
    wins support = yes
    wins hook = /etc/samba/dns_update

[daten]
    path = /daten
    read only = no
    comment = Datenverzeichnis
    browseable = yes
    valid users = rudi root
    nt acl support = yes
    acl compatibility = win2k
    security mask = 0770
    directory security mask = 0770
    map acl inherit = yes