Thanks for the updated backtrace. This looks very similar to bug 736757.
Please could you try out the version of samba in lucid proposed (see bug 736757 for more details on how todo this); this update might resolve your issue. Thanks -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in Ubuntu. https://bugs.launchpad.net/bugs/753330 Title: The Samba 'panic action' script, /usr/share/samba/panic-action, was called for PID 1783 (/usr/sbin/winbindd). -- 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