Bogus message from automatic updates

OK, it wasn't bogus.

Turns out the script

/etc/update-motd.d/92-unattended-upgrades

produces this message at login.

This script references

/usr/share/unattended-upgrades/update-motd-unattended-upgrades

which in turn looks at the contents of

/var/lib/unattended-upgrades/kept-back

In my case this last file was non-blank because unattended-upgrades tried to update vino, which I have pinned to an old version on this Lubuntu box, because the latest version removes the options dialog.

Deleting /var/lib/unattended-upgrades/kept-back made the message go away - but only till the next time unattended-upgrades ran.

But there was nothing in the logs that it told me to reference about it!!