I was reading this because i have a similar issue, i think my kernel number is dif than above but same issue.
however when i look at the CentOS-Base.repo file the centos.org is not even on the list for me in the USA
[updates]
name=CentOS-$releasever - Updates
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
#baseurl=http://mirror.centos.org/centos/$releasever/updates/$basearch/
not found in USA listing so can i just try some others and the do yum update on each and see which one fires the kernel update or whatever it does.
mine shows
A newer kernel is installed, however the system has not been rebooted. running kernel: 2.6.18-308.8.2.el5.028stab101.1, most recent installed kernel:
this is my first time doing this but i gather you do it something like this
changed mirror list to mirror-status
changed base to the one i wanted on the list mirror.centos.serving.com
[updates]
name=CentOS-$releasever - Updates
mirrorlist=http://mirror-status.centos.org/?release=$releasever&arch=$basearch&repo=updates
#baseurl=http://mirror.centos.servint.com/centos/$releasever/updates/$basearch/
well that didnt work i should not have to play a guessing game folks, i should be able to go right to the issue and right to the instructions of exactly what to do here.
yum update
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
YumRepo Error: All mirror URLs are not using ftp, http or file.
Eg. </HTML>/
removing mirrorlist with no valid mirrors: /var/cache/yum/x86_64/6/updates/mirrorlist.txt
Error: Cannot find a valid baseurl for repo: updates
UPDATE i dont even have a boot/grub/grub.conf file, it does not exist.