Just an FYI; hopefully someone who knows will be able to fix :-)
CentOS-Fasttrack – This repository contains bugfix and enhancement
updates, issued from time to time, between update sets that may be rolled
into the next update set. See this Readme file for more details. This
repository has a config file located here for CentOS-5. CentOS-6 Fasttrack
is now available and can be accessed with the repo configuration here.
But the “Readme” file and the two “here” links to the repo file are broken. I don’t know if it’s just the location has changed, or if the files are missing :-)