update-manager daemon crashes

[Marius Margowski]

Whenever I want to update with update-manager it crashes and puts the following on the screen:
Task cannot be monitored or controlled.
The connection to the daemon was lost. Most likely the background daemon crashed.

Under details it says:
It seems that the daemon died.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: update-manager 1:0.156.14.5
ProcVersionSignature: Ubuntu 3.2.0-26.41-generic 3.2.19
Uname: Linux 3.2.0-26-generic x86_64
ApportVersion: 2.0.1-0ubuntu10
Architecture: amd64
Date: Sat Jun 30 18:51:23 2012
GsettingsChanges:
 com.ubuntu.update-manager first-run false
 com.ubuntu.update-manager launch-time 1341074780
 com.ubuntu.update-manager window-height 518
 com.ubuntu.update-manager window-width 600
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
PackageArchitecture: all
SourcePackage: update-manager
UpgradeStatus: Upgraded to precise on 2012-04-27 (63 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Israel Dahl (israeldahl)]

I just experienced a similar thing. I can install the updates, but then it crashes after they are installed. It must crash instead of closing nicely. I have precise-proposed enabled, do you?

[Rich Fiekowsky (raf55)]

I had many of the same symptoms. I found a rec from JerryS to do in terminal:

sudo apt-get clean

sudo apt-get update

and "Software Updater" ran without crashing, and did lots of updates, which it would not do before.

I cannot confirm total success yet. I am now at the stage "The computer needs to restart to finish installing updates". But I want to post before closing all my tabs for the reboot.

[Ammar Alsaig (saigammar)]

I had the same symptoms and was able to fix them by following Rich Fiekowsky suggestion

sudo apt-get clean
sudo apt-get update

and then I was able to run
sudo apt-get upgrade and start the synaptic without problems.