Comment 2 for bug 1013325

This bug was fixed in the package update-manager - 1:0.164

---------------
update-manager (1:0.164) quantal; urgency=low

  [ Brian Murray ]
  * DistUpgrade/DistUpgradeApport.py: ensure package install failures are
    tagged dist-upgrade

  [ Robert Roth ]
  * UpdateManager/UpdateManager.py: check for None type from
    get_last_update_minutes (LP: #1013325)

  [ Colin Watson ]
  * DistUpgrade/NvidiaDetector, debian/control: Update symlink to Python 3
    version, available as of ubuntu-drivers-common 1:0.2.55.
  * debian/rules: Make sure to run setup.py with the default python3 last,
    so that scripts get correct #! lines.

  [ Barry Warsaw ]
  * pre-build.sh:
    - Add python-gi as an explicit dependency.
    - python3-mock is required.
  * setup.py:
    - Fix the installation of the janitor.plugincore package for Python 3.
      (LP: #1013490)
    - Calculate the setup() version number from debian/changelog.
    - Remove package_dir since it's not actually needed.
    - Whitespace normalization.
  * tests/Makefile
    - Add sleep between Python 2 and Python 3 invocation of tests under
      xvfb-run, otherwise I get crashes where xvfb doesn't come up.
 -- Barry Warsaw <email address hidden> Thu, 21 Jun 2012 20:42:23 -0400