One thing I noticed the other night while watching ANH - at the very beginning, when the Tantive IV is being attacked, Threepio says, "There'll be no escape for the Princess this time!" or something like that. Then, when he's watching the hologram of the Princess on Tatooine and Luke asks, "Who is she?", Golden Rod says he doesn't know exactly, but that she might be somebody important.

What? How could he not know who the Princess was all of a sudden? Could he not see the hologram that well? Were his restraining bolts too tight? This freaked me out.