We were as surprised as anyone when the USAF threw down the cash for 300-odd PlayStation 3s back in March of last year, but what's more shocking is that it's now back for more -- seven times more, in fact. Already employing its PS3 cluster for research into high-def video processing, the Air Force Research Lab wants to expand its capabilities significantly and it seems that Sony's Cell processor is still its weapon of choice. We would use this opportunity to make a few