Just seen it and thought it was a lot better than the da vinci code. Great locations, fast-paced, good acting. There were maybe a few plot holes but no one really cared.
I thought the recreation of the locations particularly impressive given then fact that they weren't actually allowed to film in them. I was watching the film with 2 people who had visited the vatican and they both said it was perfectly recreated (although they obviously hadn't been in the archives!).
Overall an enjoyable film that whilst not a classic, is definitely worth a watch.