I rented it too, and wasn't terribly impressed.
In the end, when Thade is locked in the control room, did I imagine that his gun changed over to a stainless Beretta from whatever it was originally?
Also, how did the small crew of the space craft and the limited number of Chimpanzees (I don't recall seeing other Apes earlier in the film) become Orangs, Gorillas, etc. And the humans got pretty diverse for a small group.