Freedom (3) The Right to be Forgotten

I find this question to be a terribly complex one.  On the one hand, if one has paid his or her dues, and by law a past transgression is no longer a matter of consideration, for example, for getting a job, buying a house, or obtaining a credit card, then why should it remain available?  On the other hand, I personally appreciate having any old information available on any person or topic of interest to me.  This is how I learn about the background of actors, for example, and how I probe more deeply into their filmography.  So the question comes down (a) morally to the freedom to move on with a clean slate and (b) pragmatically to the means with which to determine how ought to be, and ought not be, removed.