Some of you might remember how Oldboy (one of my favorite flicks, period) has been the target of at least two attempts to bring it to the big screen in the U.S. The first was in the hands of director Justin Lin, he of Better Luck Tomorrow (and, more recently, Fast and Furious). That went nowhere, but then two other folks with slightly higher profiles picked it up: Steven Spielberg and Will Smith. They're not licensing the movie for a remake, but the manga it was derived from.
This has apparently opened a massive can of legal worms. Not only is it possible that Spielberg and Smith went to the wrong people to license the manga, the Korean movie company that produced Oldboy (Show East) has vanished. (See previous link.)
That has frightening implications for the availability of the movie in any form in the future. Tartan, the distributors for the film in the U.S. and U.K., also went bankrupt, which means any copies you have lying around right now may well be the only ones available for some time.
Maybe Smithberg should have talked to Dark Horse first?