@Hinscher:
Doesn't he just need some dna of the person? and still why not jiraiya? don't tell me that there isn't blood of his somewhere from his battle
Just as I said, he probably just does not know about Konan being dead. Or he lacked the time or chakra to summon her (I know this sounds stupid at first, but maybe the technique needs more chakra the more powerful the person was, and since he already summoned a bunch of overpowered ninjas and Konan died quite recently…). Or he tried to summon her before she died and now just forgot about her (which, in my opinion, sounds quite reasonable and not that far-fetched - he probably worked down a "list" of ninjas to summon, finished with Akatsuki and did not bother to think about Konan after she died). Or maybe he feared Konan dying due to talk-no-jutsu when meeting Pain or Naruto since this seems VERY likely.
Not trying to defend Kishi creating plotholes, but this seems really minor to me.
Jiraiya is bullshit though. Kabuto's explanation is very retarded considering the other ninja DNA materials he aquired.
Wow @Ino. Just... Wow. Nightmare Fuel at its finest.
And why the hell am I actually excited about Hanzo vs the samurai guy. None of those two ever played a role, yet I am seriously excited about seeing them fight, even more so than over Shikamaru and Ino and Chouji. Maybe because at least Hanzo was foreshadowed before as being a gigantic powerhouse, who knows.