I can confirm this bug is happening. I just spent a couple of hours diagnosing and helping a friend get this fixed. After it was all resolved we were talking and he mentioned he had accessed user and groups the night before. This resulted in his group file being reduced to 3 entries and prevented him from booting. This is a huge bug and i for one have backed up my /etc/group file
** Changed in: gnome-system-tools (Ubuntu) Status: Incomplete => Confirmed -- users-admin (System->Administration->Users and Groups) overwrites group file https://bugs.launchpad.net/bugs/160862 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