I've noticed that I'm getting annoyed by the fact that when PK updates the list of packages in the repos in the background (which is fine), a notification icon appears.
This is annoying because:
+ I don't care about this event: there's nothing I can do with it, no
interaction, nothing, nothing. Did I say nothing? :-)
+ it creates a "movement" in the notification area since the icon appears and
then disappears. This is distracting.
So I really think it should just show no icon at all.