Comment 26 for bug 1046563

Just to double check the status of this bug in Lubuntu Trusty I installed Lubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140416.2) choosing to download updates during installation and, as expected, no notification of available updates ever appeared after booting into the fresh install. So I opened synaptic, chose Custom Filters > Marked Changes and intentionally deselected Firefox, then applied all other available updates, and rebooted when the updates were complete.

To my surprise I was then presented with an update notification in the panel as it should be, so this appears to be fixed in Trusty but we should follow up with fresh installs of the Trusty daily builds. Nothing to follow up on with Precise since it's EOL for Lubuntu.

Wish I could pin-point what package update(s) changed the behavior but I'm not that smart ;^)