Howdy, i too had this problem, and it seems there is a problem with the kernel source that comes with a fresh redhat install..
I solved this by going to :
http://shrike.freshrpms.net
And downloading the pre-built rpm files. !!!
Hope that helped... however if you do find out how to solve the problem email me !!
ade_wright@btopenworld.com#
Cheers!!