Thank you for taking the time to report this issue and help to improve
Ubuntu.
At the time this bug was reported, your debconf database was locked by
another process:
Preparing to replace libpam-modules 1.1.1-4ubuntu1 (using
.../libpam-modules_1.1.1-4ubuntu2_i386.deb) ...
debconf: DbDriver
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package libpam-modules 1.1.1-4ubuntu1 failed to install/upgrade: subprocess new
pre-installation script returned error exit status 1
https://bugs.launchpad.net/bugs/669004
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