The unlock buttons on Users and Groups or Network are greyed out and un-accessible.
Running from a term 'sudo users-admin' should work the same way. (Not in Ubuntu due
to bug https://bugs.edge.launchpad.net/ubuntu/+source/policykit/+bug/210897)
If you are not using a packed version, correct the problem by following this steps:
- Copy nx-session-launcher and nx-session-launcher-suid to /usr/bin
- Execute $ chown nx /usr/bin/nx-session-launcher-suid
- Execute $ chmod 4755 /usr/bin/nx-session-launcher-suid
- Copy ConsoleKit-NX.conf to /etc/dbus-1/system.d/
- Reload dbus by issuing /etc/init.d/dbus reload
- Edit /etc/nxserver/node.conf and change '#COMMAND_START_GNOME=gnome-session'
to 'COMMAND_START_GNOME=/usr/bin/nx-session-launcher-suid gnome-session'
