I'm having similar issues with RHEL and CentOS as well. In my logs, I'm seeing messages like this, over and over again, every 10 minutes. It makes me wonder if this is part of the problem:
[2008/10/15 20:26:44, 0] lib/util_sid.c:string_to_sid(242) string_to_sid: Sid S-0-0 is not in a valid format. ** Also affects: samba (CentOS) Importance: Undecided Status: New -- winbind forgets uid/name gid/name mappings in regulary periods https://bugs.launchpad.net/bugs/207791 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs