I believe it will. Because "the one" won't make it to the machine main frame and save "man kind" from extinction, and then rebirth, and starting this whole process over again.
I also believe, that if you believe what I just wrote...you probably should die in 2012
But seriously. There are more theories about 2012 than there are people in the world (exaggeration, I know), but the world could end at any time. But it'll be at our own hand...not some cosmic display of a prophecy. Unless they mean by a giant meteor trying to nest in our planet in which it just obliterates half of it.