The estate of Joe Siegel, co-creator of Superman, has been suing to get the rights back. There has been some urgency, given the supposition that the character will enter the public domain in 2013 (DC still holds the trademark, so if you want to make your own Superman stuff, you'll still have a hoop to jump through. Mark Waid's ultimate dream job was writing Superman. I wonder if he's cooking anything up....). This is why a new Sup movie has been greenlit to be done before 2013.
Well, DC has just sacked their legal team handling the case. They have hired Daniel Petrocelli. Canadians know this guy. The estate of A.A. Milne sued Disney over Winnie The Pooh, claiming the creator got shafted. Pertocelli handled the defense, and got Disney off the hook.
And now, he's handling Superman. This doesn't look good.