Hi, I have the new quad Mac Pro and I got extra ram from OWC. I purchased the 2gb pairs and I got 8 gigs. After reading all of the posts here about ram configuration I see that I am supposed to put the bigger sticks in slots 1&2 on both risers and the smaller ones in 3&4. However, when I do this and you put the computer to sleep and wake it up the fans go crazy for about 30 seconds and then slow down to normal. If the 2 gig ones are in the 3&4 slots this does not happen. I called OWC and they had me return the ram and sent me new sticks but it is still happening. Then I called apple and they say they don't know why and they want me to bring it in for service. I was just wondering it this has happened to anyone else and if it did what did you do? Thanks.