yum kernel not updating

[Neal D. Becker]

yum update
Setting up Update Process
Setting up Repo:  development
repomd.xml                100% |=========================| 1.1 kB    00:28
Reading repository metadata in from local files
developmen: ################################################## 3504/3504
Excluding Packages
Excluding Incompatible Archs
Finished
Excluding Packages from Fedora Core 2.91 - Development Tree
No Packages marked for Update/Obsoletion

rpm -q kernel
kernel-2.6.8-1.541

ls /var/cache/yum/development/headers/kernel-2.6.8-1.584.i686.hdr
/var/cache/yum/development/headers/kernel-2.6.8-1.584.i686.hdr

So, why is my kernel not updating?  I tried setting exactarch=0, and I tried
also yum install kernel.