Sounds like typical 'middle volume' fare -- characters hanging around waitin for the ending.

One of the things that's always annoyed me about the Harry Potter series is that it wants to be 'grown-up', contemporary, and have genuine danger; yet it's set in a quaint, old-fashioned, half-jokey public school world -- and the two just sit awkwardly together. This film sounds like more of the same.

And that's probably the most analytical thing I'll ever write about Harry Potter...