Incorrect Upstart implementation

Binary package hint: anacron

Since about one week, whenever this particular host does its daily cron run, it sends me the following e-mail:

8X-----
Subject: Cron <root@geode> start -q anacron || :

start: Job is already running: anacron
8X-----

Needless to say, such an e-mail is useless to the user. It however seems to suggest that anacron's upstart implementation and/or cron job is incorrectly implemented, which needs fixing.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: anacron 2.3-14ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i586
Architecture: i386
Date: Mon Apr 25 12:20:38 2011
ProcEnviron:
 LANGUAGE=fi_FI:fi:en_US:en
 PATH=(custom, user)
 LANG=fi_FI.UTF-8
 SHELL=/bin/bash
SourcePackage: anacron
UpgradeStatus: Upgraded to natty on 2009-02-07 (806 days ago)