That leaked U2 album is causing all sorts of trouble. The unreleased album, which is due out on March 3, found its way onto BitTorrent and was downloaded hundreds of thousands of times. That, apparently, sent music industry lawyers over at the Recording Industry Association of America into a fit. As a result, word is going around that the RIAA asked social music service Last.fm for data about its user’s listening habits to find people with unreleased tracks on their computers. And Last.fm, which is owned by CBS, actually handed the data over to the RIAA.