I mirror the FC6 repos from kernel.org. I successfully upgraded a machine running FC5 to FC6 with it. It would see the repos is OK. I installed a fresh copy of FC6 on another machine. After the installed, this is the first thing I did: [root@relay cache]# yum install emacs Loading "installonlyn" plugin Setting up Install Process Setting up repositories core 100% |=========================| 1.3 kB 00:00 Reading repository metadata in from local files primary.xml.gz 100% |=========================| 772 kB 00:00 ################################################## 2242/2242 Parsing package install arguments Resolving Dependencies --> Populating transaction set with selected packages. Please wait. ---> Downloading header for emacs to pack into transaction set. media://1161131669.029329%233/Fedora/RPMS/emacs-21.4-17.i386.rpm: [Errno 4] IOError: <urlopen error unknown url type: media> Trying other mirror. Error: failed to retrieve Fedora/RPMS/emacs-21.4-17.i386.rpm from core error was [Errno 4] IOError: <urlopen error unknown url type: media> [root@relay cache]# Any ideas?