Ok, as security updates are available for over a day now and I received no automatic package update notification I continued my investigation for the root cause of this issue. As it turned out, /etc/cron.daily/apt is not marked as executable on my system.
@Thomas: Can you please check if that also applies to your system? I Cc'd the Ubuntu Security Team as I consider a missing notification about security-relevant updates a security issue - while not being exploitable itself it will cause other (possibly exploitable) security issues to remain unpatched. -- No automatic package update notifications since Intrepid upgrade https://bugs.launchpad.net/bugs/299360 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