Are you a dual-booter running a Linux-Windows or even a Linux-Linux dual-boot system? Have you ever lost booting access to one of your OSes or want to be prepared for if and when that happens? If yes, ...
The second option for 2.4.20 is not showing up on the grub menu. If I go to the grub command prompt, the vmlinuz-2.4.20 doesn't show up when running "kernel /boot/<TAB>" even though it is under /boot.