I'm all for ripping on inaccuracies, plotholes, or ridiculousness in movies (ask me about The Fugitive sometime), but there is a time and a place for it, and that time or place is either at home or during conversations with friends or at work, not while the movie is playing in a theater full of people who paid through the nose to watch the damn thing.
As an aside, the only movie I ever walked out of in the theaters was That's My Boy. I don't like Adam Sandler movies, but I went because we went as a group from work. I lasted about twenty minutes before I walked across the street to Wendy's and read a book while waiting for everyone else.