I think I'm in the minority. I've read the books and loved the film too. I've seen it twice already. I guess it helps a lot that I can't remember the book very well at all!
Still, I thought the acting was overall much better in this one and I loved the balance between light humour and the darker sides. The actor who plays Draco was fantastic, it was great to see him in a larger role and I thought he played the part perfectly. Bellatrix & Snape were awesome as usual. I thought Harry, Ron & Hermione, well, the actors, were pretty good too.
I definitely don't think the film was flawless by a long shot. Like everyone's said, it left a lot out and I think they could've focused more on certain aspects. But overall, I really liked it.