[Bug 434835] Re: unattended-upgrades hangs system on shutdown

[b1252666]

Over here Lucid (no gui) also hangs on reboot with: "Checking for running unattended-upgrades: ".
Killing or terminating of "/usr/bin/dpkg --force-confdef --force-confold --status-fd 11 --unpack --auto-deconfigure /var/cache/apt/archives/libpam-modules_1.1.1-2ubuntu5.3_i386.deb" is impossible (tried 3 times).

> uname -a
Linux bs04 2.6.32-32-generic #62-Ubuntu SMP Wed Apr 20 21:54:21 UTC 2011 i686 GNU/Linux

> cat /proc/version_signature
Ubuntu 2.6.32-32.62-generic 2.6.32.38+drm33.16

Syslog lists as last 3 lines:
Jun  5 10:45:45 bs04 kernel: [55330.313035] ata6.15: failed to resume link (SControl FFFFFFFF)
Jun  5 10:45:45 bs04 kernel: Kernel logging (proc) stopped.
Jun  5 10:45:45 bs04 rsyslogd: [origin software="rsyslogd" swVersion="4.2.0" x-pid="1002" x-info="http://www.rsyslog.com"] exiting on signal 15.

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https://bugs.launchpad.net/bugs/434835

Title:
  unattended-upgrades hangs system on shutdown

Status in Unattended upgrades:
  New
Status in “unattended-upgrades” package in Ubuntu:
  Incomplete

Bug description:
  Binary package hint: unattended-upgrades

  I am running Kubuntu-Netbook, based on Karmic I believe, my problem
  relates to shutting down the netbook.

  version appears as: Installed 0.52ubuntu1

  I'd expect the machine to shutdown, reboot when requested.

  Instead it appears to shut down nicely until I see

  *Shutting down ALSA               [ OK ]
  Checking for running unattended-upgrades:* Asking all remaining processess to terminate    _

  and it will just sit there, forever.

  The unattended-upgrades script in /etc/init.d has been run on a
  seperate machine by hand and appears to hang on that machine also.

  My bug reporting is not much up to scratch, so I hope I've covered it.