GRUB showing all kernels

[bub]

Is it normal for GRUB to show the different kernels for my FC3? I update them, and it shows each new kernel on GRUB in addition to my Windows; shouldn't it just update the previous one?

[Furball]

No, that's some kind of protection. If a new kernel doesn't work as expected or even doesn't boot your linux you can always take the older version that works.
As a side effect you have to remove older kernels manually.

[smfinley]

if you remove old kernels they will be automatically removed from grub. Do an "rpm -qa | grep kernel" to see what you've got and a "yum remove <kernel_name> <kernel-devel_name>" as root to remove the old stuff.