Oh yeah. Having just re-read the 6th book, it pretty well explained why the prophecy was necessary, but that was absent from the film.
I think one of the problems, was that whilst the other books/films kind of build up to a conclusion, this one felt almost tagged onto the end. For instance, in the Philsophers Stone they gradually find clues that lead up to the end of the story. I think the Order of the Pheonix is a bit disjointed in this sense. Whilst the scenes with Umbridge were funny, they had no real bearing on the outcome. That made me feel that it was too slow in places.
I think one of the problems, was that whilst the other books/films kind of build up to a conclusion, this one felt almost tagged onto the end. For instance, in the Philsophers Stone they gradually find clues that lead up to the end of the story. I think the Order of the Pheonix is a bit disjointed in this sense. Whilst the scenes with Umbridge were funny, they had no real bearing on the outcome. That made me feel that it was too slow in places.