I believe the bug you describe should be partially fixed in the upcoming release 2.27.3, soon available in Karmic. Now, users should be greyed out if one cannot edit them, and modifying your own account information will ask you to authenticate when pressing OK.
Could you try that version, now or when it is released (october)? Thanks! ** Changed in: gnome-system-tools (Ubuntu) Status: Triaged => Incomplete -- [hardy] Unlock button not in dialog https://bugs.launchpad.net/bugs/245809 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