How could this be so highly rated?

Rating: 1/10 (8 June 2007)

I just don't understand this high rating for Zodiac. There has to be some kind of mistake. I saw this with a group of friends when it first came out and there wasn't any one of us who remotely liked this movie.
No story. Bland Acting. Jake Gyllenhaal was not believable. Running time was way too long. It felt like we were watching a bad late night cable movie. This movie stank.
Was it supposed to be a suspense film? If so, it wasn't very suspenseful. Was it supposed to be a character study? If so, none of the characters proved to be very interesting. The handling of the subject matter was muddled at best.