Rares Aioanei wrote:
It's PackageKit, most likely. Try running gpk-prefs.
gpk-prefs has no effect whatsoever under KDE Plasma sessions, where Apper is used, not gnome-packagekit.
There is a setting for the frequency of checking in Apper (and "a few minutes" isn't even an option, the minimum is hourly), but it doesn't work, see the bug https://bugzilla.redhat.com/show_bug.cgi?id=752564 already linked by the original poster.
There's also this bug filed about the slowness and insane CPU consumption of the checks: https://bugzilla.redhat.com/show_bug.cgi?id=748790
Kevin Kofler