Obi-Wan as Ben
I was watching ANH last night and rememered that Obi-Wan tells Luke that he hasn't gone by OB1 since before he was born. Does that mean the name changes before Luke and Leia are born? It would appear so. And another thing I noticed is Vader says to OB1 "You should have not returned." Does this mean that Anakin/Vader knew of OB1 going into hiding and just didn't care because he knew OB1 wouldn't become involved?