I'm the owner of a new mac pro, and I recently bought 4gig of ram from OWC. I installed the ram correctly - two gigs per stick, shuffled the old ram down to the second slots installed the new ram in the first slot on the top and bottom. However, the mac's only recognizing the new 4 gigs in the first slot. I was pretty static safe, touching my case in all the right places every few minutes and not moving. I'm pretty sure I haven't killed anything. Any idea what could be wrong? Is there some little bite of common knowledge someone is keen to share?