Cannot retrieve repository metadata (repomd.xml) for repository

Despues de muchas vueltas dar  :D

Ejecute esto en un Linux RedHat Enterprise 5.3

rpm -Uhv http://apt.sw.be/redhat/el5/en/i386/rpmforge/RPMS/rpmforge-release-0.3.6-1.el5.rf.i386.rpm

rpm -Uvh http://download1.rpmfusion.org/free/el/updates/testing/5/i386/rpmfusion-free-release-5-0.1.noarch.rpm



y el vendito yum update -y funciono!