I am halfway through it. I've made a couple of guesses but as yet don't know whether they are right or not. I am looking forward to the rest of the book though.
I think the whole trilogy is vastly overrated. The girl with a dragon tattoo was ok, it was a page turner. The second one was an ordeal to read. The third was mildly more interesting than the second. I was hoping for better really having read the reviews and listened to my friends raving about it.