As discussed in Webtatic EL 5 and 6 adding EPEL dependency, the Webtatic EL5 and EL6 repositories will now require the EPEL 5/6 repositories to have been configured for various dependencies of the packages supplied. The old packages previously synced from the EPEL repositories have been moved to the Webtatic archive repositories, accessible via adding --enablerepo webtatic-archive to Yum commands.

Its recommended to use the EPEL repository from now on instead of these archived packages, as the former will keep them updated.