On Fri, 2011-04-15 at 16:37 +0200, Hans Vos wrote: > Hello Cal, > > Thank you for your reply. > > > It's possible that your #2 server has not rebooted or had problems with > > the latest kernel or just has the default set to something other than > > "0" in grub.conf. > > I did a reboot and checked the grub.conf. Should have mentioned that. > > > What's the output of: > > > > egrep 'default|title' /etc/grub.conf > > # egrep 'default|title' /etc/grub.conf > default=0 > title CentOS (2.6.18-238.5.1.el5xen) > title CentOS (2.6.18-238.el5xen) > > > yum list kernel | grep kernel > > yum list kernel | grep kernel > kernel.x86_64 2.6.18-238.5.1.el5 > updates Ryan is right. The mirrors need to sync up. That's most likely the cause. Still, it's curious why you have two kernels listed in grub.conf and only one listed from yum. You should also see the 2.6.18-238.el5xen kernel listed. ./Cal