for 386 installs: should the x86_64 kernel be installed?

[sean darcy]

As I read the new architecture stuff, x86_64 compatible machines will 
use the x86_64 kernel even if it's an i386 (  586) install.

Does this mean it's now time to go to the x86_64 repo and get the 
kernel? kernel-headers? Will we need to set up the x86_64 yum repo?

Or will this all happen automagically with yum upgrade sometime in the 
future?

sean