2010/7/17 Ng Oon-Ee <ngoonee@gmail.com>
When a kernel is updated kernel modules are as well. For example, nvidia is pushed up one pkgrel because a new kernel is out. With your suggestion the old kernel is saved as vmlinuz26-old. Which can't get a graphical login because the old nvidia module is gone.
I didn't know that.
Also, because menu.lst is not automatically edited for you, you'd still need to manually add the old kernel to grub to be able to boot from it. I submit that users who are able to do that (as all Archers are supposed to be able to do) are also able to downgrade the kernel from a live disc.
If not for the problem above-mentioned, creating a permanent entry for vmlinuz26-old wouldn't be a problem. One could even edit the entry in the grub menu itself. -- Rafael Beraldo http://cabaladada.org