On my 2006 mac pro, It only shows one CPU in system profiler (see attatched). This had not happened until a day after I installed Snow Leopard. It happened before i went to 10.6 -> 10.6.8. I noticed a drop in performance, and was wondering why. Any way to fix without dissembling. I recently brought it to a friends house and it did not show this problem till about 3 hours ago. We have done nothing to this machine, and I still am at my friends house. Any solutions?