Did anyone successfully used large AD groups for samba authentication in Fedora? I was able to join the AD domain and go to the share when I allow only the users instead of group(s). And groups 'usernname' command takes around 40 seconds or more to return the group list. Most users are in more than three groups. I also noticed the winbind_cache.tdb file gets very large -- around 4MB. Any hints? Thanks. # rpm -qa|grep samba system-config-samba-1.2.9-2 samba-3.0.3-5 samba-client-3.0.3-5 samba-common-3.0.3-5 # rpm -qa|grep krb krb5-devel-1.3.3-7 krb5-libs-1.3.3-7 pam_krb5-2.0.10-1 krbafs-devel-1.2.2-2.1 krb5-workstation-1.3.3-7 krbafs-1.2.2-2.1