I'm having ups and downs today. Now I'm back at another down ... I completed my upgrade from 9.0 to 9.1. It ran OK. Before reconfiguring my disks (which was the point of the upgrade) I thought to make sure everything was up-to-date. So I ran YOU. Everything seemed OK but one of the updates was from kernel 2.6.4-52 to 2.6.5-7.108 and now it won't boot! It starts to boot, getting as far as saying it is checking but then apparently just hangs/loops. The disk light is on and I let it sit for about 20 mins. I brought up a rescue system using my original update boot CD and can see the /boot directory contains the 2.6.5 kernel but I don't see the old one. Does YOU not keep the previous version? How can I back out the update? Or can I just reinstall the kernel alone from the boot CD? Thanks, Dave