I have a domain member samba server set up with winbind and compiled with acl support sharing out an ext3 filesystem, also with acl support. Some bits of smb.conf (with names changed to protect the innocent): --- [global] workgroup = XYZATL realm = XYZ.COM security = domain password server = * winbind separator = + idmap uid = 10000-65000 idmap gid = 10000-65000 winbind enum users = yes winbind enum groups = yes winbind enable local accounts = no admin users = XYZATL\theman netbios name = ATL-ARCHIVE local master = no dns proxy = no nt acl support = yes [Archive] path = /mnt/samba/archive public = yes writable = yes --- winbind seems to work great. wbinfo -u, getent both show what the documentation indicate they should. I can setfacl the files with the nt groups -- super cool. My problem is that XP clients logged in as theman can't modify the acls (security tab / advanced). I see something funny in winbindd.log that comes right about the time the client gets 'access denied' messages: [2004/05/25 10:01:45, 1] nsswitch/winbindd_group.c:winbindd_getgrnam(298) group theman in domain ATL-ARCHIVE does not exist Why would he be treating the netbios name as the domain? Is this a windows funny? Any help would be *much* appreciated. Cheers, Sam