This sounds like a common install problem with fc6. If you investigate this a little bit you will find the answer. I bet you have kernel-2.6.18-1.2798-i586.rpm installed and kernel-devel-...-i686.rpm please read: http://fedoraproject.org/wiki/Bugs/FC6Common#head-e0676100ebd965b92fbaa7111097983a3822f143
Thanks Stefan, I just figured this out last night that I had the wrong kernel installed (i586) but I hadnt figured out how to fix it, thanks a lot! Best regards, Alastair