It is slightly different.. When I open update-manager manually (by clicking on the icon in System menu), it shows me available updates if they are there. But it doesn't light up the warning icon on the panel to show that updates are available, so I need, from timo to time, to run it to check for updates. I think the problem is really related with the notifying icon not appearing.
-- update-manager doesn't detect updates available https://launchpad.net/bugs/94078 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs