[PlanetCCRMA] upgrade from FC3 to FC4

[Brad Fuller]

Anyone who has updated their FC3 system to FC4 care to describe how they 
did it? I expect that it is a two step process: 1: update base to FC4 
and 2: update planetccrma installs to FC4.

This link seems proper, anyone follow this? :
http://fedoraproject.org/wiki/YumUpgradeFaq

I see it is not recommended:
http://fedoraproject.org/wiki/DistributionUpgrades

although the installation from CD has an upgrade:
http://fedora.redhat.com/docs/fedora-install-guide-en/fc4/ch-upgrading-system.html

it never worked for me in the past. A clean install was always required.

Any hints most appreciated!

brad