ImportError: No module named gobject

cant open it, only get this output on quantal i386:

oem@dub:~$ sudo software-properties-gtk
Traceback (most recent call last):
  File "/usr/bin/software-properties-gtk", line 37, in <module>
    from softwareproperties.gtk.SoftwarePropertiesGtk import SoftwarePropertiesGtk
  File "/usr/lib/python3/dist-packages/softwareproperties/gtk/SoftwarePropertiesGtk.py", line 34, in <module>
    from aptdaemon import client
  File "/usr/lib/python3/dist-packages/aptdaemon/client.py", line 43, in <module>
    import gobject as GObject
ImportError: No module named gobject

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: software-properties-gtk 0.90
ProcVersionSignature: Ubuntu 3.5.0-4.4-generic 3.5.0-rc6
Uname: Linux 3.5.0-4-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.4-0ubuntu1
Architecture: i386
Date: Wed Jul 18 15:45:24 2012
PackageArchitecture: all
SourcePackage: software-properties
UpgradeStatus: No upgrade log present (probably fresh install)