Thank you for your reply. That means with the 10.6.4 MAC updated the kerne, is that correct? I never messed around with boot/kernel files so I am not sure what I am doing... What should I do or install another kernel, please?

I have read some posts that with 10.6.2 update, MAC cut out some drivers so that Atom processors could be used. So further, I am guessing only that with 10.6.4 MAC cut out perhaps all CPU's support other that the ones they are using. If that is the case, what is the fix?