[CentOS] Yum not updating kernel

Fri Feb 22 21:02:32 UTC 2008
Bob Taylor <bob8221 at gmail.com>

It seems everybody is out of ideas why yum is not updating the kernel.
The following kernels are installed in /boot:

vmlinuz-2.6.18-8.1.14.el5
vmlinuz-2.6.18-8.el5

I originally installed CentOS 5.0 via CD. Yum automatically updated to
5.1 including kernel-2.6.18-8.1.14.el5.

I have traced the kernels from kernel-2.6.18-8.el5 to
kernel-2.6.18-8.1.14.el5. Yum stopped updating at this point.
kernel-2.6.18-8.1.14.el5 was installed Oct 10, 2007 according to
yum.log. It seems I installed rpmforge.repo around October 13, 2007. The
installation included two files. rpmforge.repo and mirrors-rpmforge. The
contents of rpmforge.repo is:

# Name: RPMforge RPM Repository for Red Hat Enterprise 5 - dag
# URL: http://rpmforge.net/
[rpmforge]
name = Red Hat Enterprise $releasever - RPMforge.net - dag
#baseurl = http://apt.sw.be/redhat/el5/en/$basearch/dag
mirrorlist = http://apt.sw.be/redhat/el5/en/mirrors-rpmforge
#mirrorlist = file:///etc/yum.repos.d/mirrors-rpmforge
enabled = 1
priority = 99
protect = 0
gpgkey = file:///etc/pki/rpm-gpg/RPM-GPG-KEY-rpmforge-dag
gpgcheck = 1

Other than the priority is not needed, does any of the previous ring a
bell? Still frustrated.

I received the following this morning:

/etc/cron.daily/yum.cron:

Error: Cannot find a valid baseurl for repo: base
Could not retrieve mirrorlist
http://mirrorlist.centos.org/?release=5&arch=i386&repo=os error was
[Errno 14] HTTP Error 505: DNS lookup error
Could not retrieve mirrorlist
http://mirrorlist.centos.org/?release=5&arch=i386&repo=os error was
[Errno 14] HTTP Error 506: Failure To Connect To Web Server

Has CentOS.org changed their url?

-- 
Bob Taylor