Ubuntu
update-manager package

  1. Bug #437094
  2. Comment #9

Comment 9 for bug 437094

Revision history for this message
Krzysztof Kosinski (tweenk) wrote : Re: [karmic] update-manager sometimes requires entering password twice

But note that the reverse (can upgrade but not install) could be useful :)
So the installation privilege should include upgrade privileges, but not the other way around.