Spoilers regarding "HP and the Deathly Hallows" will be in this post.
Disappointed? Not exactly. I enjoyed the last book, though it was not what I expected, and I thought it deviated from the usual Harry Potter style, if you know what I mean. Well, obviously, considering the main characters weren't at school. I must say however, I felt the ending was totally anticlimactic, and was just attempting to please the masses by having a happy ever after ending. JK hyped us all up about death and all, and though there was death, none of the "golden trio" died, shockingly enough. *sarcasm*
So, to answer your question, I wasn't disappointed, but did not enjoy the last HP book as much as I thought I would.