A regular-auto-launch-interval of 0 means that update-manager will launch as soon as updates are available. With update-notifier's lack of support for phased-updates it is likely that the notification is due to an update undergoing phasing which update-manager chooses not to install, hence the message your system is up to date.
One way to confirm this would be to include the output of 'apt-get upgrade' in a terminal. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1222096 Title: "Software Updater" popup displays every hour To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1222096/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
