A group of Microsoft researchers, including Paul
'Mr Secure PC' England, has delivered a paper which concludes that all efforts to stop content swapping/theft - possibly even including Palladium - are in the long term futile. This message, particularly the bit that dealt with the economics of DRM-enabled versus 'clean' content, must have gone down a storm with the audience.
Which, since you ask, was the Association for Computing Machinery DRM conference.
The paper, which is currently available
here, is particularly striking in that it argues its way persuasively through the history, present and future of file sharing, the success or otherwise of 'attacks' (academicspeak for 'lawyers') on it, and concludes that file sharing will triumph.