List of things significantly wrong with the new Harry Potter book:
I didn't way that /nothing/ was wrong with it ;-).
But I really enjoyed it. Certainly, it's the first book I've read in a long while that made me laugh out loud on a regular basis. It's clever, funny, engaging, the characters develop well (especially Neville), and the groundwork is laid for the penultimate episode.
I, for one, can hardly wait ;-)