computer-janitor-gtk not working

[rafik24]

Binary package hint: computer-janitor

Description: Ubuntu natty (development branch)
Release: 11.04
computer-janitor 2.0.4-0ubuntu1
computer-janitor-gtk 2.0.4-0ubuntu1

Computer janitor does not request authentication in order to remove packages, it does not remove packages even when running as root.

Error message: System cleanup failure
System cleanup could not complete. Be sure no other package manager Such as synaptic or update manager is running.

no other package manager is running as i can install packages using apt

console output:

sudo -s computer-janitor-gtk
[sudo] password for user:
/usr/share/computerjanitor/computerjanitorapp/gtk/ui.py:94: GtkWarning: Could not load image 'computerjanitor-24x24.png': Failed to open file '/usr/share/computer-janitor/computerjanitor-24x24.png': No such file or directory
  builder.add_from_file(glade_file)
ERROR:dbus.proxies:Introspect error on :1.47:/: dbus.exceptions.DBusException: org.freedesktop.DBus.Error.AccessDenied: Rejected send message, 1 matched rules; type="method_call", sender=":1.52" (uid=0 pid=2065 comm="/usr/bin/python) interface="org.freedesktop.DBus.Introspectable" member="Introspect" error name="(unset)" requested_reply=0 destination=":1.47" (uid=0 pid=1615 comm="/usr/bin/python))
org.freedesktop.PolicyKit1.Error.Failed: Error getting subject: Error parsing unix-process subject: Value for key `start-time' found but is of type i and type t was expected

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: computer-janitor-gtk 2.0.4-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.37-5.14-generic 2.6.37-rc2
Uname: Linux 2.6.37-5-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Tue Nov 23 13:55:54 2010
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 LANG=C
 SHELL=/bin/bash
SourcePackage: computer-janitor

[Marius Gavrilescu (mgvx)]

This happens to me too