I had a problem installing updates with yum with an FC4 dvd install right out of the box.
I wanted to do like a full update. so I did
yum update as root and it failed.
that frustrated me. because it took several hours to get the headers
.. I decided that yumex handled repos better. by checking them or something i dono. it must just work better otherwise the author has no reason to write it ..
anyhow. doing updates with that worked.
I hope this helps people
it may not get everything. but I did do a manual kernel update first.
rebooted. then did a yum update yum
then did a yum install yumex
then ran yumex and did updates thru that interface.
it's possible the original repos were just temporarly down for repair or something. but geezus. That's discouraging.