http://www.youtube.com/watch?v=DldvjKHLp8A
http://www.youtube.com/watch?v=vXxio6j8SIw
http://www.youtube.com/watch?v=SxlESKod35o
They're saying they accidentally sold the developer's version to steam users. No word on if the retail PC version is bugged or not.
EDIT: Apparently they're saying it's on the 360 and PS3 as well. Trolololol.