The Identity of Kim Il Sung (1949) [pdf]
Meh, the so-called "fake Kim Il Sung theory" isn't a new info found in 2011, it was a raging conspiracy theory all the way back from 1940s.  If you speak Korean, search for "김일성 가짜설", you'll find wiki pages the size of a book chapter.From what I've heard, the theory is largely discredited now.  (Of course that doesn't mean North Korea's breathless account of Kim's heroic adventures is anywhere near believable, but that's a separate issue.)