samba with pam_ldap: problem with groups

[alois blasbichler]

hello, 
i have a problem:
i use a openldap DB (1.2.12-3) and pam_ldap (version 116) to autenticate 
the user for SAMBA (version 2.0.7-42).

all works fine, i can autenticate the user with name/password.
i can allow all users
i can allow only one user (pam_filter uid=pippo)

but i dont can allow a group of users:  i tried:
pam_groupdn cn=samba,dc=domain,dc=it
pam_member_attribute memberuid

he let login all the users, not only the user in the correct group
i dont get an error 

thanks for every help
alois

the entrie of my ldap:
> > cn=samba,dc=domain,dc=it
> > cn=samba
> > objectclass=top
> > objectclass=posixGroup
> > gidnumber=103
> > creatorsname=uid=admin,dc=domain,dc=it
> > createtimestamp=20010905121825Z
> > modifytimestamp=20010905123357Z
> > modifiersname=uid=admin,dc=domain,dc=it
> > memberuid=test
> > description=samba