Put Captain Solo in the Cargo Hold said:
I'm always under the assumption that the general public (I mean the people in the Star Wars universe) doesn't know Vader and Anakin are one and the same. That it's a dark secret known to only to Obi-Wan, Yoda and the Emperor. Though in order for this to work, you have to disregard the prequels and EU.
That won't be a problem ;).