It had it's faults but I quite liked it. I thought the ending wrapped it all up nicely. I don't see how she could have had another ending without a) showing evil triumphing, or b) leaving the door open for an eighth book (which she said she wouldn't do).
Heh, I heard about the ending. They said it was weird but some things had to be said to totally end the Harry Potter Novels.... The movies however depict only little of what is in the books, sadly so.
I haven't read one sentence of any HP book or seen one minute of any HP movie. I think the ending is great. I'm sick of hearing about Harry Potter books. Woot!