I confirm this bug. It started when upgrading from 7.10 to 8.04 (kubuntu), but when i call sudo, it shows this error, but otherwise it looks like it's function is unaffected. Adding record to /etc/hosts solves the problem
-- Missing hostname in /etc/hosts causes sudo to fail https://bugs.launchpad.net/bugs/19775 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs