Could you please have a look in /var/log/syslog and see if you see messages along these lines:
Feb 1 08:32:39 localhost ypbind: Host name lookup failure there? Thanks. -- nis client fails to start at bootup https://bugs.launchpad.net/bugs/105648 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list [EMAIL PROTECTED] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs