Update-manager progress bar doesn't fully reach the right

[Hamish McIntyre-Bhatty]

All updates apply successfully, but the progress bar doesn't reach the right. My ubuntu version is precsie, running on an emachines er1402 from 2011.

Output of lsb_release -rd:

Description: Ubuntu 12.04.2 LTS
Release: 12.04

Output of apt-cache policy update-manager:

update-manager:
  Installed: 1:0.156.14.11
  Candidate: 1:0.156.14.11
  Version table:
 *** 1:0.156.14.11 0
        500 http://gb.archive.ubuntu.com/ubuntu/ precise-updates/main i386 Packages
        100 /var/lib/dpkg/status
     1:0.156.14.5 0
        500 http://security.ubuntu.com/ubuntu/ precise-security/main i386 Packages
     1:0.156.14 0
        500 http://gb.archive.ubuntu.com/ubuntu/ precise/main i386 Packages.

What should happen is the progress indicator reaches the right on the last stage of setting up the package(s).

[Hamish McIntyre-Bhatty (hamishmb)]

It may be helpful if an attempt to reproduce this was made. Even though this is unimportant, it makes Ubuntu look a little rough around the edges.

[Hamish McIntyre-Bhatty (hamishmb)]

Additional information found: The progress bar moves as expect until dpkg starts processing triggers. Then the bar is completely still, therefore the progress bar for update-manager may have some code missing from it. This does not occour when performing operations with the Synaptic Package Manager.