Originally Posted by Sir-Nerd

Time to show my Nerdom.

What's up with Dumbledore's dead hand? The Horcrux Ring that was in Dumbldore's possession caused that, simply touching or wearing it destroys you.

You find this out in the seventh book. I wont spoil any of the details on the ring or why Dumbledore wore it in the first place, cause as I said, it's revealed in the seventh book.

If you can split yourself every time you kill someone couldn't there be 100's of spare Voldemorts? 2 reasons: A. It's difficult to do it even once, no matter how powerful you are.
B. Ripping part of yourself and depositing it into an object makes yourself weaker if your still alive, making your original body easier to be overthrown and killed. There can only be one physical being, no matter how many horcruxes, so there can't be 100 Voldemorts.

I agree that they didnt explain this quite well enough in the movie. There could be 100 horcruxes. But as nerd said, creating a horcrux breaks the soul into smaller and smaller pieces, each one making it more unstable than the last. However, creating a horcrux isnt just achieved by killing someone. There has to be a murder, followed by the horcrux being created using an incantation. You'll find out exactly how many voldemort made in the seventh book/movie.

Why does Malfoy not want to kill Dumbledore? There's still some good in the Malfoys, especially in the mother and son. They seem outright evil, the movies make it more so, but the books reveal a more troubled side to the family.

you dont find this out until book 7.

What ever happened to the ministry of magic and why aren't they doing anything about the bad guys? The Ministry was taken over by agents of Voldemort. People of high power were either Death Eaters or being controlled by them with magic. This Ministry also sent spied on surveillance against people like the Weasleys.

the ministry doesnt get taken over by voldemort and the death eaters until book 7. they dont show it in book six, but the ministry IS trying to fight voldemort's forces. there are simply too many of them and they're very good at guerrilla warfare. they explain all of that in book 7.

book six, as anyone who read it can tell you, left a LOT of open ended questions, such as the ones asked. but you get all the answers in book 7, which is why they're making it into two movies. JK Rowling specifically requested that they do it (which I read about in an interview) so that they cover all of the important questions that are answered in book 7, which one hour-and-a-half movie wouldnt cut.