When updating or changing the software sources from the system settings applet, and then upon closure of the applet causes the software center to crash.
ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: software-properties-gtk 0.82
ProcVersionSignature: Ubuntu 3.2.0-7.13-generic 3.2.0-rc7
Uname: Linux 3.2.0-7-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 1.90-0ubuntu1
Architecture: amd64
Date: Fri Dec 30 02:49:19 2011
DuplicateOf: https://bugs.launchpad.net/bugs/848428
ExecutablePath: /usr/bin/software-properties-gtk
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111129.1)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/software-properties-gtk --open-tab 2
PythonArgs: ['/usr/bin/software-properties-gtk', '--open-tab', '2']
SourcePackage: software-properties
Title: software-properties-gtk crashed with DBusException in call_blocking(): com.ubuntu.SoftwareProperties.PermissionDeniedByPolicy: com.ubuntu.softwareproperties.applychanges
UpgradeStatus: Upgraded to precise on 2011-12-30 (0 days ago)
UserGroups: adm lpadmin sambashare sudo
Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 828850, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.