I loved it.
I haven't been a Jolie movie fan since "The Bone Collector," but she was awesome in it.
It had its predictable moments but they did well with it all. There were times where Jolie reminded me of Hargitay in L&O SVU, particularly during the "I shall confess everything that I did before the end of the show" part. She also reminded me of "Tomb Raider" at times.
There will probably be a "Salt 2."