I also decided to follow Thomas Cheungs apparently straight-forward upgrade instructions, published in the first edition of the FedoraNews newsletter/ezine, on my work laptop (Dell Inspiron running FC3 - and windows XP).
After many hours of Yum downloading and installing packages and a reboot I was duly presented with the Fedora login screen. However login caused a fleeting error message which I barely made out; some words 'permission denied' I think were involved. Logging in via singlke user mode (runlevel 3) caused the same problem. I only managed to login on runlevel 1. Once in, my network connectuion was operational which is a small bonus.
In summary, the Yum update 'upgrade' method has screwed my abilty to login to my system. Has anyone else experienced anything similar and has anyone tested this update approach. I have now attempted to upgrade/install FC4 twice using different methods and it has failed me twice on previously healthy installed systems.
I would have thought by the fourth revision FC installation would get smoother, apparently not.
I am frustrated
P.S. I noted during the Yum Update it threw up issues to do with the targeted policy rpm SELINUX thingy. But I presumed (obviously wrongly) that others would have followed the instriuctiuons to the letter like I did and got success thereby assuming these little selinux foibles were to be expected. Just followed the instructuions guv - honest!