Hi,
I see that there are updates and no lines with reasons in the SPEC file (%chagelog). Please include changelog messages to allow track the changes and reasons for this (when something breaks for example). Also there are a tools for tracking changes in the updated system by emailing %changelog changes together with sw updates.
Also there is almost no documentation even FC6 devel tree has a same package with a lot more docs:
http://download.fedora.redhat.com/pub/fedora/linux/core/development/i386/os/...
There is still a question if the "stable" tree of CentOS 4 Extras should have latest and greatest package (in compare with FC4 or FC5 tree).