Comment 19 for bug 475503

First, just want to clear the air. I'm using a Linux Mint system, not a straight Ubuntu system. But Mint is Ubuntu-based. I also followed the upgrade path, instead of installing fresh. Mine was a more indirect upgrade. I believe my path was something like Mint Xubuntu Gloria -> Ubuntu Karmic -> Mint Ubuntu Helena. (Wireless networking was not "Just Working" under straight Ubuntu -- no problems in Mint)

$ lsb_release -rd
Description: Linux Mint 8 Helena - Main Edition
Release: 8

$ apt-cache policy gnome-system-tools
gnome-system-tools:
  Installed: 2.28.1-0ubuntu2
  Candidate: 2.28.1-0ubuntu2
  Version table:
 *** 2.28.1-0ubuntu2 0
        500 http://ubuntu.osuosl.org karmic/main Packages
        100 /var/lib/dpkg/status

I was also getting this message from my computer:

$ gksu users-admin

(users-admin:11756): Liboobs-WARNING **: There was an unknown error communicating with the backends: Failed to execute program /lib/dbus-1.0/dbus-daemon-launch-helper: Success

I've tried the above:
$ sudo killall /usr/sbin/console-kit-daemon
$ sudo /usr/sbin/console-kit-daemon
$ sudo killall /usr/lib/policykit-1/polkitd
/usr/lib/policykit-1/polkitd: no process found
$ sudo /usr/lib/policykit-1/polkitd
Registering null backend at priority -10
Using authority class PolkitBackendLocalAuthority

At this point, the first terminal session did not give me a c/l back, so I went to a second terminal session:

$ gksu users-admin
(users-admin:12665): Liboobs-WARNING **: There was an unknown error communicating with the backends: Failed to execute program /lib/dbus-1.0/dbus-daemon-launch-helper: Success

Back on the first terminal, I now see:

$ sudo /usr/lib/policykit-1/polkitd
Registering null backend at priority -10
Using authority class PolkitBackendLocalAuthority

(process:12651): GLib-GObject-WARNING **: value "-1" of type `gint' is invalid or out of range for property `pid' of type `gint'
** (process:12651): DEBUG: system-bus-name::1.1893 is inquiring whether unix-process:12665:322721 is authorized for org.freedesktop.systemtoolsbackends.set
** (process:12651): DEBUG: user of caller is unix-user:root
** (process:12651): DEBUG: user of subject is unix-user:root
** (process:12651): DEBUG: checking whether unix-process:12665:322721 is authorized for org.freedesktop.systemtoolsbackends.set

** (process:12651): WARNING **: skipping unknown tag <_description> at line 11

** (process:12651): WARNING **: skipping unknown tag <_message> at line 12

** (process:12651): WARNING **: skipping unknown tag <_description> at line 12

** (process:12651): WARNING **: skipping unknown tag <_message> at line 13

** (process:12651): WARNING **: skipping unknown tag <_description> at line 21

** (process:12651): WARNING **: skipping unknown tag <_message> at line 22

** (process:12651): WARNING **: skipping unknown tag <_description> at line 30

** (process:12651): WARNING **: skipping unknown tag <_message> at line 31

** (process:12651): WARNING **: skipping unknown tag <_description> at line 39

** (process:12651): WARNING **: skipping unknown tag <_message> at line 40
** (process:12651): DEBUG: