When installing several rpm-packages at once with kpackage, e.g. from Powertools, one a) can't see the messages at the bottom (Building package tree and other logs) b) gets a window after each package with title Error (sic!) and has to confirm the installation of each package. I couldn't find an option to disable the confirmation after each package. Especially the error message is irratating for new users.
as i know, it's fixed in kde 3.1.x