I don't have an example, but Sony warns you that there is a real chance of this happening if you decide to change your name. I haven't bothered to google or see if it actually happened to anyone, but I wouldn't be surprised if it did. As I was telling the other poster, you probably aren't hearing any noise about it because the risk outweights the pros. Also, changing your name isn't ground breaking since people been doing it since 2005 or 2006 with XBL. It's more of a welcome to the party, Sony.