IIRC, one of people's biggest problems with Starship Troopers is that it was exactly the opposite of how they interpreted the source. They saw the point of the Heinlein story as the fact that the humans were the invaders and the bugs were innocent natives. But the movie turned that on its ear so that it was just a ``patriotic'' war movie/western.

Now, to be honest, I've never read the book or seen the movie, but I'm basing this largely on the independent comments of a good number of people I know and whose opinions are usually intelligent and accurate. Just to say that even though you saw it as very accurate, they saw it as way off.