[CentOS] Where's v5.3 source RPMs?

[Steve Snyder]

It seems that the mirrors are now all sync'd with the binary RPMs, but 
where are the source packages?

The source RPMs are available for the few packages updated since the 
upstream 5.3 release, but the SRPMS for the release itself are 
missing.

Example: http://mirror.centos.org/centos-5/5.3/os/ has directories 
containing the x86 and x86_64 binaries, but should also have a SRPMS 
directory.