I try to setup Samba 3 integrate with FDS 1.0.2 on FC5 follow this howto: http://directory.fedora.redhat.com/wiki/Howto:Samba Everything seemed go on the right way until I mapped ntgroup to unixgroup 1. Here's my case: [root at dsat ~]# net groupmap list [root at dsat ~]# net groupmap add rid=512 ntgroup="Domain Admins" unixgroup=domainadmins adding entry for group Domain Admins failed! 2. Here's samba log: [root at dsat ~]# tail /var/log/smbd.log [2006/10/10 08:51:23, 0] lib/smbldap.c:smbldap_connect_system(851) ? ldap_connect_system: Failed to retrieve password from secrets.tdb [2006/10/10 08:51:23, 1] lib/smbldap.c:another_ldap_try(1051) ? Connection to LDAP server failed for the 15 try! [2006/10/10 08:51:24, 0] passdb/secrets.c:fetch_ldap_pw(629) ? fetch_ldap_pw: neither ldap secret retrieved! [2006/10/10 08:51:24, 0] lib/smbldap.c:smbldap_connect_system(851) ? ldap_connect_system: Failed to retrieve password from secrets.tdb [2006/10/10 08:51:24, 0] passdb/pdb_ldap.c:ldapsam_search_one_group(2170) ? ldapsam_search_one_group: Problem during the LDAP search: LDAP error: (unknown) (Time limit exceeded) Here's some setting in smb.conf security = user passdb backend = ldapsam:ldap://localhost ldap admin dn = cn=admin ldap suffix = dc=local,dc=atc ldap user suffix = ou=People ldap machine suffix = ou=Computers ldap group suffix = ou=Groups