I got a call too. 12/18/2012. They said they were from some legal office and wanted to verify my mailing address so they could send a "legal notice". I asked them what it was about and they refused to tell me.
I heard a lot of voices in the back ground and got the impression this was a call center.
The address they had for me is over six years old. I suspect they are a scam. If somebody really wanted to serve me with a legal notice and this notice was legit most likely they would have already had my current address. She offered to tell me what my last 4 of my SS was............ so big flippin deal. That doesn't mean I am going to give my current address or verify the last 4 of my SS! Over my dead body will I verify my last 4 of the SS#. How am I to know they are not fraudsters trying to steal my identity? I don't.