Last several times kpackagekit ran to update here, it didn't work well at all. I told it to 'apply' updates. It seems to just hang, saying 'getting info' or something like that. Eventually I just try to cancel. (I always end up with 2 of them, and need to try to cancel both. No idea what the hell is going on). I'm left with the icon still there, if clicked it says: Getting updates (cancelling). Forever. In the meantime, it actually DID finish the updates OK.