yum rpms in os and stable

I'm confused as to why at fedora.us there is a http://download.fedora.us/fedora/fedora/1/i386/RPMS.os/yum-2.0.4-2.noarch... and a http://download.fedora.us/fedora/fedora/1/i386/RPMS.stable/yum-2.0.3-0.fd... How did that happen? I understood the fedora.us package naming guidelines to mean that the "0.fdr" portion of the release tag indicates that the yum package is not in the core distribution, but clearly yum-2.0.4-2.noarch.rpm is in the core distribution. Further, since yum-2.0.4-2.noarch.rpm is in the core os repository, why is a lower version, i.e. yum-2.0.3-0.fdr.1.1.noarch.rpm, even in the stable repository? Just curious and trying to learn. Thanks. -- Jeff Kowing <jeffrey.d.kowing(a)nasa.gov&gt; All opinions expressed are my own and not of my employer.