coreutils is installed, cannot su -, and cannot add user still running as root

[Bruno Wolff III]

On Mon, Apr 07, 2008 at 17:17:41 +0100,
  Bill Crawford <billcrawford1970 at gmail.com> wrote:
> On 07/04/2008, Antonio Olivares <olivares14031 at yahoo.com> wrote:
> 
> A suggestion (not able to try myself as I no longer have an F7 machine
> to try) is, make sure you use "upgrade" rather than "update" as the
> yum command. I usually attempt to upgrade yum first when doing this
> sort of thing, but that will probably pull in updates to python and
> various libraries anyway, and before you know it you'll be upgrading
> half the system anyway :o)).

If you set obsoletes=1 flag in /etc/yum.conf you will always get that
(upgrade versus update) behavior. I have heard the claim that that flag is set
by default with Fedora installs, but I am not sure if that is true or when it
might have become true.
You probably always want that behavior because even updates within a major
version can obsolete things.