Time to upgrade to FC5…

First we upgrade our system to the latest FC4 updates:
yum upgrade

Upgrade the fedora release:
rpm -Uvh http://download.fedora.redhat.com/pub/fedora/linux/core/5/i386/os/Fedora/RPMS/fedora-release-5-5.noarch.rpm

Upgrade the yum:
yum upgrade yum

And now time for the full system upgrade:
yum upgrade

Wait……….do a reboot and you are up and running.