It appears that update-manager could not remove libnss3 for some reason and that was blocking the update . running sudo apt-get dist-upgrade installed all updates and cleared the update-manager notification that a partial upgrade was needed.
It appears that update-manager could not remove libnss3 for some reason and that was blocking the update . running sudo apt-get dist-upgrade installed all updates and cleared the update-manager notification that a partial upgrade was needed.