On Tue, May 26, 2009 at 16:20:00 -0400,
Seth Vidal <skvidal(a)fedoraproject.org> wrote:
The biggest problem you are likely to run into with a yum-based upgrade
is situations where updating something takes out the foundation on which
yum is running.
Another showstopper is when you can't run mkinitrd for the new kernel
properly under the old kernel.