Comment 0 for bug 718188

Binary package hint: upstart

Due to ntpdate (installed with ubuntu-minimal), the time was corrected backwards during boot, obviously after starting dovecot, causing

dovecot: Fatal: Time just moved backwards by 90 seconds. This might cause a lot of problems, so I'll just kill myself now. http://wiki.dovecot.org/TimeMovedBackwards

after which dovecot was not restarted.