After further investigation this seems to be related to a recent upstream bug:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=550892 ** Bug watch added: Debian Bug tracker #550892 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=550892 -- pam_mount trying to unmount my auto-mounted encrypted partitions every hour via CRON https://bugs.launchpad.net/bugs/483159 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
