[time-admin]Cannot change timezone: PolicyKit Error

[Rick Spencer]

Binary package hint: gnome-system-tools

Clicking the unlock button to change the timezone does nothing. If run from terminal, the time-admin reports the following to the command line when the button is clicked:

(time-admin:2904): polkitgtk-WARNING **: Error obtaining authorization for action id `org.freedesktop.systemtoolsbackends.set': GDBus.Error:org.freedesktop.PolicyKit1.Error.NotAuthorized: Only trusted callers (e.g. uid 0) can use CheckAuthorization() and pass details

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: gnome-system-tools 2.32.0-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.37-10.24-generic 2.6.37-rc6
Uname: Linux 2.6.37-10-generic i686
NonfreeKernelModules: wl
Architecture: i386
Date: Mon Dec 20 03:49:14 2010
InstallationMedia: Ubuntu-Netbook 10.04 "Lucid Lynx" - Alpha i386 (20100329)
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 LC_MESSAGES=en_US.utf8
 SHELL=/bin/bash
SourcePackage: gnome-system-tools