update-manager fails to run (could be dbus?)

Binary package hint: update-manager

DISTRIBUTION VERSION/ARCH: Feisty on AMD64

PACKAGE VERSIONS:

update-manager : 0.53.3
dbus : 1.0.2-1ubuntu2

HOW TO REPRODUCE:

1. Go to System > Control Center > Update Manager
=> Nothing happens

2. Open console start update-manager =>
------------------------console output [start]--------------------------------
$ update-manager
Traceback (most recent call last):
  File "/usr/bin/update-manager", line 86, in <module>
    app = UpdateManager(data_dir)
  File "/usr/lib/python2.5/site-packages/UpdateManager/UpdateManager.py", line 300, in __init__
    self.setupDbus()
  File "/usr/lib/python2.5/site-packages/UpdateManager/UpdateManager.py", line 440, in setupDbus
    '/org/freedesktop/UpdateManagerObject')
  File "/var/lib/python-support/python2.5/dbus/_dbus.py", line 412, in get_object
    follow_name_owner_changes=follow_name_owner_changes)
  File "/var/lib/python-support/python2.5/dbus/proxies.py", line 232, in __init__
    _dbus_bindings.UInt32(0))
  File "/var/lib/python-support/python2.5/dbus/proxies.py", line 171, in __call__
    reply_message = self._connection.send_message_with_reply_and_block(message, timeout)
dbus.DBusException: org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.UpdateManager was not provided by any .service files
--------------------------console output [end]------------------------------------

3. As root (or with sudo) update-manager _runs_ with this output to the console:
--------------------------console output [start]----------------------------------
# update-manager
warning: could not initiate dbus
could not send the dbus Inhibit signal: org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.

(synaptic:6087): libglade-WARNING **: Error loading image: Failed to open file '/usr/share/synaptic/glade/system-upgrade': No such file or directory

(synaptic:6087): libglade-WARNING **: could not convert string to type `GdkPixbuf' for property `pixbuf'

(synaptic:6087): libglade-WARNING **: Couldn't find image file: system-upgrade
current dist not found in meta-release file
------------------------------console output [end]--------------------------------------

DISCUSSION:

It seems that there is either something with the update-manager or dbus.
There is a mention of a missing dbus .service file for org.freedesktop.UpdateManager could that be the problem?