This may be self-inflicted (most of my issues are) Anyway, I added at-stable to my yum.conf file as follows: [at-stable] name=ATrpms for Fedora Core $releasever stable baseurl=http://dl.atrpms.net/fc$releasever-$basearch/at-stable and I also imported the AT gpg key: wget http://ATrpms.net/RPM-GPG-KEY.atrpms rpm --import RPM-GPG-KEY.atrpms Then I ran : yum --disablerepo=freshrpms update This updates some 100+ packages. After a reboot I run yum update and I get: Setting up Update Process Setting up repositories http://ftp.belnet.be/packages/dries.ulyssis.org/fedora/linux/4/i386/dries/RPMS/repodata/repomd.xml: [Errno 4] IOError: HTTP Error 403: Date: Wed, 20 Jul 2005 23:51:54 GMT Server: Apache/1.3.29 (Unix) PHP/4.3.8 Transfer-Encoding: chunked Content-Type: text/html; charset=iso-8859-1 Trying other mirror. Cannot open/read repomd.xml file for repository: dries failure: repodata/repomd.xml from dries: [Errno 256] No more mirrors to try. Error: failure: repodata/repomd.xml from dries: [Errno 256] No more mirrors to try. If I disable dries I get: yum --disablerepo=dries update Setting up Update Process Setting up repositories atrpms 100% |=========================| 951 B 00:00 livna 100% |=========================| 951 B 00:00 macromedia 100% |=========================| 903 B 00:00 nrpms 100% |=========================| 1.0 kB 00:00 http://dl.atrpms.net/fc4-i386/at-stable/repodata/repomd.xml: [Errno 4] IOError: HTTP Error 404: Date: Wed, 20 Jul 2005 23:52:26 GMT Server: Apache/2.0.54 (Fedora) Content-Length: 315 Connection: close Content-Type: text/html; charset=iso-8859-1 Trying other mirror. Cannot open/read repomd.xml file for repository: at-stable failure: repodata/repomd.xml from at-stable: [Errno 256] No more mirrors to try. Error: failure: repodata/repomd.xml from at-stable: [Errno 256] No more mirrors to try. Any thoughts?