so i upgraded my 400mhz AGP graphics PowerMac G4 a few years back to a 1ghz OWC, and put a newer 128mb ATI Radeon video card, and bumped up the ram. i was considering getting the 2ghz 7448 upgrade for a while, but i noticed that they aren't selling it anywhere anymore. does anyone know if there's a shortage of g4 chips or something? suddenly no company has one for sale that i can find. is there a new one about to be released or is it being phased out? just curious.