Hello all, We are using samba/winbind for authenticating users using Active Directory (2k8) as our "backend". We are using the rid idmap backend. Everything is working perfectly, except on a few boxes I have noticed that users we could look up before, return just the id (not the name),or "user not found". Stopping samba/winbind, removing the idmap_cache.tdb file then starting samba/winbind has fixed this problem every time. It has not happened multiple times on the same box, but has happened a few times on different servers. We are running RHEL 5.3/5.4 using their version of samba, 3.0.33-3.15.el5_4.1 (which is the latest RHEL provides) . From the documentation I notice that it does say that the tdb files can get corrupted, however I was wondering if the newer versions of samba suffer from less tdb file corruption, or if there is something I can do to either prevent/lessen the chances of the tdb file getting corrupted. Also, is there a specific event that happens that causes it to get corrupted, or are there a vast variety of reasons? Thank you. smb.conf: netbios name = <redacted> workgroup = <redacted> security = ads realm = <redacted> use kerberos keytab = true idmap backend = rid idmap uid = 4000-100000000 idmap gid = 4000-100000000 winbind enum users = yes winbind enum groups = yes auth methods = winbind template shell = /bin/bash template homedir = /afs/<redacted>/home/%U winbind normalize names = yes winbind use default domain = yes allow trusted domains = no winbind cache time = 3600 -- Andrew Tranquada Sent from Blacksburg, VA, United States