Just a heads up for anyone who cares. The presto test repositories for Fedora at http://lesloueizeh.com have been removed. They were only available for Fedora Core 6 – Fedora 10, which have all been EOL’d.
The official Fedora repositories have been carrying deltarpms since Fedora 11, so there was no longer any reason to keep the test repositories around.
The CentOS 5 presto repositories are still available and will be until the CentOS project enables deltarpms for their repositories (if they ever do).