[Bug 790538] Re: pam update causes cron to stop working with "Module is unknown" error

[Tomofumi]

Apart from crond, anacron seems had been hanged since may31 too, there
is an apt defunct process there, what should i do or is it require to
reboot?

root     22114     1  0 May31 ?        00:00:00 /bin/sh -c test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily )
root     22115 22114  0 May31 ?        00:00:00 run-parts --report /etc/cron.daily
root     22118 22115  0 May31 ?        00:00:00 [apt] <defunct>

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https://bugs.launchpad.net/bugs/790538

Title:
  pam update causes cron to stop working with "Module is unknown" error

Status in “pam” package in Ubuntu:
  Fix Released
Status in “pam” source package in Lucid:
  Fix Released
Status in “pam” source package in Maverick:
  Fix Released
Status in “pam” source package in Natty:
  Fix Released
Status in “pam” source package in Hardy:
  Fix Released

Bug description:
  Upgrading libpam-modules from 1.1.1-4ubuntu1 to 1.1.1-4ubuntu2.2, cron stopped working, just gives a log message "Module is unknown". This happened during unattended-upgrades this night, so there might be a lot of people who didn't realize that yet.
  Downgrading to 1.1.1-4ubuntu1 fixes this.
  Ubuntu 10.10 amd64, almost vanilla, fresh, minimum install + java (ppa) + postgresql9 (ppa).