I would think there is a ceremony or something similar proving Naruto is a Chuunin then to just say he is in a filler, and that Sakura past, was just dumb, I really agree with r3n about having her be useless for 102 episodes and then all of a sudden she can do that, and I have to say what was up with Sasuke just standing there when he activated his Sharingan (thought he looked weird too) and was just telling Naruto stuff...usually Sasuke fights.