There is an article on The Smoking Gun
(linked by the DrudgeReport) stating that Penguin is suing some of its authors who received big advances but haven't followed through on writing the books they were contracted to write.
I wonder if the authors are truly despicable individuals who took the money and didn't write the books, or if there is more to it. Could it be that the authors have written manuscripts and submitted them to Penguin only to have Penguin reject the manuscripts? Maybe Penguin just doesn't want to go through with some of these projects? I have no idea, but it would be nice to hear the other side.