I managed to find a copy in the 4.0beta/updates directory on beta.centos.org: http://beta.centos.org/centos/4.0beta/updates/SRPMS/kernel-2.6.9-5.0.3.EL.src.rpm However, the question still remains. Why don't the 4.0/os directories contain the kernel packages (source and binary) for the version installed by the 4.0 ISOs? --- Jesse <j at lumiere.net>