It's not just "manual configuration" that causes this failure. I had this exact thing happen to me when I tried to reconfigure my network interface via the System -> Administration -> Network tool. I disabled roaming mode and enabled DHCP... and NetworkManager whacked my /etc/hosts file so that I could no longer use sudo. See bug 214360
-- [hardy] Manually Configuring Network Causes Massive, Unreversable, Failure https://bugs.launchpad.net/bugs/185209 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs