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[Jay Goldberg <jaymgoldberg@xxxxxxxxx>]

This issue also affects the LTSP project. If you are logged into a thin
client using LDM (LTSP Display Manager), the buttons Add, Delete,
Advanced Settings do not work in users-admin.

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https://bugs.launchpad.net/bugs/685596

Title:
  users-admin doesn't report error when PolicyKit authentication fails

Status in “gnome-system-tools” package in Ubuntu:
  Triaged

Bug description:
  Binary package hint: gnome-system-tools

  When I run users-admin (gnome-system-tools package version
  2.32.0-0ubuntu1) in natty i386, clicking the "Add", "Delete", and
  "Advanced Settings" buttons has no effect. Clicking the "Manage
  Groups" button does bring up the "Groups settings" window.

  In the "Groups settings" window, the "Add" and "Delete" buttons have
  no effect. Clicking the "Properties" button does bring up the Group
  Properties window for the selected group.

  In the Group Properties window, changing the group ID to a number
  already in use by another group does issue an error, but changing the
  group ID number to a number not already in use or changing which users
  are members of the group fail silently (as though the operations had
  succeeded).

  When I run users-admin from a console, it prints this output to the
  command-line upon launch:

  GLib-GIO-Message: Using the 'memory' GSettings backend.  Your settings
  will not be saved or shared with other applications.

  (users-admin:1337): GLib-GObject-CRITICAL **: g_object_unref:
  assertion `G_IS_OBJECT (object)' failed

  Clicking the "Manage Groups" button results in another assertion
  message being printed (every time it is clicked). Clicking other
  buttons mentioned above does not result in messages being printed.

  When I first experienced this bug, my system suffered from Bug 685349.
  I had thought that might have been the cause of this bug (though in
  hindsight I am not sure why I thought that). As a workaround for Bug
  685349, I manually changed the value of the gconf2 key /apps/gksu
  /sudo-mode key from false to true. This fixed my problems elevating
  privileges to root in other applications, including other gnome-
  system-tools applications, but it did not appear to have any effect on
  the behavior of users-admin, including its output to the console. I
  bring this up to suggest that this bug in users-admin is occurring
  before any attempt is made to elevate privileges to root (or
  preventing such an attempt from being made).

  (This bug is the "situation" I referred to in Bug 685215 that had led
  me to try running users-admin as root.)

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: gnome-system-tools 2.32.0-0ubuntu1
  ProcVersionSignature: Ubuntu 2.6.37-7.19-generic 2.6.37-rc3
  Uname: Linux 2.6.37-7-generic i686
  Architecture: i386
  Date: Sun Dec  5 13:10:22 2010
  ExecutablePath: /usr/bin/users-admin
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20101202)
  ProcEnviron:
   SHELL=/bin/bash
   LANG=en_US.UTF-8
  SourcePackage: gnome-system-tools

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