Martin, In gnome-system-tools found bug #236305 "Creating user with username 'admin' hoses admin group, sudo config", that describes exactly what I faced. Re-posted there, thanks for your reply.
-- Changing users randomly affects other users and group memberships https://bugs.launchpad.net/bugs/26338 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
