package update-notifier-common 0.119ubuntu8.6 failed to install/upgrade: subprocess installed post-installation script returned error exit status 137

[mohclips]

ubuntu sent me here

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: update-notifier-common 0.119ubuntu8.6
ProcVersionSignature: Ubuntu 3.2.0-32.51-generic 3.2.30
Uname: Linux 3.2.0-32-generic x86_64
ApportVersion: 2.0.1-0ubuntu14
AptOrdering:
 flashplugin-installer: Install
 flashplugin-installer: Configure
Architecture: amd64
Date: Wed Nov 7 20:50:12 2012
ErrorMessage: subprocess installed post-installation script returned error exit status 137
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
PackageArchitecture: all
SourcePackage: update-notifier
Title: package update-notifier-common 0.119ubuntu8.6 failed to install/upgrade: subprocess installed post-installation script returned error exit status 137
UpgradeStatus: No upgrade log present (probably fresh install)

[Brian Murray (brian-murray)]

The DuplicateSignature:

Processing triggers for update-notifier-common ...
flashplugin-installer: downloading http://archive.canonical.com/pool/partner/a/adobe-flashplugin/adobe-flashplugin_11.2.202.251.orig.tar.gz
Killed
dpkg: error processing update-notifier-common (--unpack):
 subprocess installed post-installation script returned error exit status 137

[Launchpad Janitor (janitor)]

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

[Bryce Nesbitt (bryce2)]

For me it stuck during an upgrade (along with the warning that if I interrupted the process my system might be unusable).
I was able to get past it by using:

http://askubuntu.com/questions/149017/how-to-cancel-update-manager-downloading-flashplugin-installer/375295#375295