Ah, I forgot one more thing and that is how Yondaime has survived. Notice back in chapter 260 there is a jutsu of the Akatsuki leader's the Shouten no Jutsu (Imitation shapeshifting technique) that is mentioned. If the leader indeed is Yondaime it would explain how he was able to survive sealing away the kyuubi. I'm aware that this was to save the village from the rampageing Kyuubi, but I can't help but wonder if that is why the death god was incapable of takeing the kyuubi's soul, due to the obvious chakra limitation. And something has always bugged me about the first few chapters and that is that Sandaime makes mention of Yondaimes wish for Naruto to become a hero of the village. Which has one slight flaw how could Yondaime know his jutsu would be a sucsess, unless he had practiced it before under similar circumstances or if he was around after the success of his jutsu. I mean without some prior knowledge to what it would do I can't even help, but begin to question Yondaimes morals seeing as how this would almost lead to even more implication of a certain level of useing the infant Naruto as a human sacrifice of sorts*shivers*. I hope that part is just too much speculation on my part, I think that would be going a little too far.