User can't run nm-tool on 12.10 system

[Chris Green]

I have a Lubuntu 12.10 system where, for some reason, a user can't run
nm-tool:-

    chris at revo:/etc/dbus-1/system.d$ nm-tool

    ** (process:1618): WARNING **: Could not initialize NMClient /org/freedesktop/NetworkManager: Rejected send message, 2 matched rules; type="method_call", sender=":1.16" (uid=1000 pid=1618 comm="nm-tool ") interface="org.freedesktop.DBus.Properties" member="GetAll" error name="(unset)" requested_reply="0" destination="org.freedesktop.NetworkManager" (uid=0 pid=945 comm="NetworkManager ")

    NetworkManager Tool

    State: unknown


    ** (process:1618): WARNING **: error: could not connect to NetworkManager


However it works fine when run as the root user.

A further symptom of the same thing (I think) is that the Network Manager applet is
non-functional, the icon is there on the panel but it just tells me "Network Manager
is not running...".  However Network Manager is running and I do have an internet
connection.


-- 
Chris Green