Comment 4 for bug 1043872

This is only partial a problem. This indicates only that the update-manager is not able to handle all upgrades that are available.

This states often occure on Ubuntu developer version.

I have just closed a ticket of yours that suffer from this I guess.

You can circumvent this problem(recomment for Ubuntu developer version) with doing a deep upgrade:

sudo apt-get update

and

sudo apt-get dist-upgrade

--------------------------------

Just for knowing:

update-manager is doing only a

sudo apt-get upgrade

and with this not all system components are upgraded. update-manager recognized this like that they are not there, well, which can be seen as a little bug. But it is better to stay on this, In stable releases this situations are rare.

Best again from me

melchiaros