I also encountered this problem. It looks like gnome-session always asks a name server about the ipv6- and ip-adress of the host. Removing the domainname-part in the hosts file seems to fix the problem.
-- System unusable when internet connection down and domain name set https://launchpad.net/bugs/72346 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
