I read the books. I understand that you can't put every little detail in the movie. However, I feel that it was too spotty. They didn't deal with Snape enough. They left out to many things with Tonks and Lupin. The movie could easily have been 20 - 30 mins longer and not hurt anyone. I am sick and tired of watching movies cut short because of this silly time limit. However, I knew this book was going to be a problem because it was so "internal". Much of the story of the movie is what people are thinking and that is hard to portray on film.
Overall, however, I enjoyed the movie. It wasn't a waste of time and I glad I saw it. I just hope they spend more time on the details with the last movie.