I found myself bored with parts that didn't feature a pre-teen murdering people or saying "cunt."
As the movie began I thought, "I fucking hated the comic. Why am I here?" and as the movie went along, I was just more and more bored.
Was it an accurate comic book movie? Yes, for the most part. The jetpack sort of blew up the fridge for me, but other than that, it stayed relatively true to the comic. I think the problem is that it just doesn't translate well. The only part of the comic I enjoyed was JRJR's artwork, but the film isn't animated obviously, so there is no way for them to get me to like it.
To summarize how I really feel about the movie, allow me to quote my initial reaction to the jetpack, "This shit is retarded."