apparently the work of someone from these very boards!

http://www.pitchforkmedia.com/page/news/40205/Smashing_Pumpkins_to_Play_Some_European_Festivals

"The Pumpkins' webmistress also responded to the recent "leak" of four demo tracks allegedly from the recent studio sessions by saying, "OH! And those 'Baker Demo' leaks... well, we read it was a Brit band who was behind that. Don't worry Simon, no one's gonna sue you. The band got a kick out of the story." The Simon she refers to is the lead singer of Amy Blue, the London band who leaked their own songs masquerading as Pumpkins demos via a torrent site as a prank. Pretty clever, actually"

superb work :D