When applying system updates, sometimes the Software Updater window disappears

[Aere Greenway]

Sometimes (last occurence April 14th, 2013) when applying system updates, the software updater window goes away, yet updates are actually being applied in the background.

It probably depends on system load at the time, since it doesn't happen every time.

The software updater window should not go away. I should be able to monitor the progress of updates being applied, and more importantly, know when updating is complete, and if it completed successfully.

This is similar to bug 1159589, but in this case, it happened on a machine that meets the minimum system requirements of Ubuntu/Unity-Desktop.

I am using Ubuntu 12.10, Unity-Desktop, in this case.

I have also observed it in Lubuntu 12.10, and UbuntuStudio 12.04.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: update-manager 1:0.174.4
ProcVersionSignature: Ubuntu 3.5.0-27.46-generic 3.5.7.7
Uname: Linux 3.5.0-27-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.6.1-0ubuntu10
Aptdaemon:
 Apr 18 22:15:27 aere-OptiPlex-GX240 AptDaemon: INFO: Quitting due to inactivity
 Apr 18 22:15:27 aere-OptiPlex-GX240 AptDaemon: INFO: Quitting was requested
Architecture: i386
Date: Fri Apr 19 11:27:25 2013
DpkgHistoryLog.txt:
 Start-Date: 2013-04-18 22:09:04
 Commandline: aptdaemon role='role-commit-packages' sender=':1.79'
 Upgrade: xserver-common:i386 (1.13.0-0ubuntu6.1, 1.13.0-0ubuntu6.2), libcurl3-gnutls:i386 (7.27.0-1ubuntu1.1, 7.27.0-1ubuntu1.2), xserver-xorg-core:i386 (1.13.0-0ubuntu6.1, 1.13.0-0ubuntu6.2), libcurl3:i386 (7.27.0-1ubuntu1.1, 7.27.0-1ubuntu1.2), libcurl3-nss:i386 (7.27.0-1ubuntu1.1, 7.27.0-1ubuntu1.2)
 End-Date: 2013-04-18 22:09:31
GsettingsChanges:
 b'com.ubuntu.update-manager' b'first-run' b'false'
 b'com.ubuntu.update-manager' b'launch-time' b'1366344440'
 b'com.ubuntu.update-manager' b'show-details' b'true'
 b'com.ubuntu.update-manager' b'window-height' b'421'
 b'com.ubuntu.update-manager' b'window-width' b'500'
InstallationDate: Installed on 2012-05-27 (326 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
UpgradeStatus: Upgraded to quantal on 2012-10-21 (180 days ago)

[Launchpad Janitor (janitor)]

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