No Kernel Source from that download site
Yes, there is:
http://download.fedora.redhat.com/pub/fedora/linux/core/3/SRPMS/kernel-2.6.9-1.667.src.rpm http://download.fedora.redhat.com/pub/fedora/linux/core/updates/3/SRPMS/kernel-2.6.9-1.681_FC3.src.rpm http://download.fedora.redhat.com/pub/fedora/linux/core/updates/3/SRPMS/kernel-2.6.10-1.741_FC3.src.rpm http://download.fedora.redhat.com/pub/fedora/linux/core/updates/3/SRPMS/kernel-2.6.10-1.741_FC3.src.rpm http://download.fedora.redhat.com/pub/fedora/linux/core/updates/3/SRPMS/kernel-2.6.10-1.766_FC3.src.rpm
You did read the FC3 release notes, didn't you?
Paul.