I Know Pavlik's addiction problems are probably the worst kept secret in boxing but just seen a statement from his Dad confirming he's gone into Rehab again.
http://sports.yahoo.com/box/news?slug=ki-pavlikrehab112610
Don't know if the link above works.
If not you can find the story either on The Ring's site or on Yahoo.
He's always been overrated as a fighter but he seems like a down to Earth kid so I hope he gets well soon.