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 Also if I do "yum info kernel-xen" I get this on server 1: Name : kernel-xen Arch : x86_64 Version : 2.6.18 Release : 238.9.1.el5 Size : 95 M Repo : installed Summary : The Linux kernel compiled for Xen VM operations URL : http://www.kernel.org/ License : GPLv2 Description: This package includes a version of the Linux kernel which : runs in Xen VM. It works for both priviledged and unpriviledged guests. And this on server 2: Name : kernel-xen Arch : x86_64 Version : 2.6.18 Release : 238.5.1.el5 Size : 95 M Repo : installed Summary : The Linux kernel compiled for Xen VM operations URL : http://www.kernel.org/ License : GPLv2 Description: This package includes a version of the Linux kernel which : runs in Xen VM. It works for both priviledged and unpriviledged guests. -- Kind regards, Hans Vos