I noticed that in Steve Job's keynote at WWDC, he mentioned that "Leopard will be fully 64-bit". I believe he also said something like *most* of the current hardware will be able to run it. Is it true that all current Mac hardware except for the Mac Mini (Core Duo) has 64 bit capability? If so, does that mean you need a 64-bit capable processor to run it? Will my current MacBook (2GB RAM, 1.83 Ghz Core Duo) be able to run Leopard? Anybody have any guess as to what hardware specs would run Leopard decently?