Today suddenly the packet manager symbol popped up on the panel (hover text 'A packet manager is working') even though I didn't click anything, in fact I was afk.
When I clicked on the symbol the update manager was opened, but there were no updates available.
Updates are set to 'don't download automatically'.
I like to know what's going on in my system and this is not the usual update behaviour (or is it?) so does anyone have an explanation?