Just out of curiosity, do .iso downloads make up a significant portion of bandwidth on mirror.centos.org? I was surprised to not find bittorrent available for them... I would imagine these files to take up a significant portion of the bandwidth for new releases. At the very least more mirrors should be added to mirror.centos.org, and if that still doesn't help, then go further by removing the primary source from mirror.centos.org and restricting access to only mirrors. -Dave