I dont understand why people like for main characters to be killed off. If Kishimoto killed evryone off that SHOULD have dies in this manga, then it would most likely be over with already. I guess the ones that complaine want this thing to be over with anyway... shesh

anyway, back to topic, I think Kishimoto has already made clear that you dont have to kill your friend to get the Mangekyou with Sasuke saying he will aquire it his own way, so Kakashi having it does not surprise me. Also, the fact that he is having so much trouble using it also suguest what some other people here were saying, that most likely being a full blood Uchiha, you can have more control over it, and not as many side effects. It is definatly not the same kind. I'm sure Itachi got his Mangekyou right after he killed his friend. Kakashi has had the eye for a long time, and is now just getting it, and a half ass one at that. And even if he did get it when itachi used it on him, it was still about three years ago, and has taken him this long to get it to the stage it is at. Now if Kakashi had the same control over it as Itachi does, then that would be kinda meh, but it has greater side effects, and i'm sure we will get an explanation of how he got it soon. I wonder why he has to close his other eye?

And about Naruto using the Rasangan, two things... remember chapter 258, Naruto was never seen with a clone when he used the rasangan on itachis clone. It seems as soon as Kakashi attacks itachi and his clone runs at them, naruto bust it out and attacks. So I dont think he needs the clone. Also, the anime has been abusing the rasangan, where as in the manga, naruto has only used it I'd say a few times. So, to the manga only reader, it is not as bad, at least not as bad as kage bushin, yet. I HOPE that he has learned some new stuff while being with Ero-Sen. Only time will tell.