I think that in FC1, the default application associated with RPMs was "Install Packages", but this doesn't seem to be the case in FC2.[...]
As a result, if you end up with an RPM opened from a web browser or double-clicked from a folder, you get an alert about no default application being associated with it.
I believe it has to do with the fact that the "official" or "standard" MIME/type for the RPM extension is "Real Media" something.
So at some point it was decided to leave the .rpm files without asociation (an asociation with "Install Packages" would be non-standard, and an asociation with Real Media Player would be a mistake in a rpm-based distribution as FC2)
Regards,
-- Mariano
