Finally watched this on BD earlier today. I really liked it. There's a lot of cat and mouse in the dialogue sequences, a few times it was difficult to see where it was going but it ended up making sense by the end of the scene and I found myself more entertained overall, even though it did drag a few times, than I think I would if they had just cut to the action parts.
I didn't have any issues with freezing at all. The PQ was mostly excellent, except for a few scenes that seemed less clear than I expected. Audio was excellent, with subtle surround usage to keep me in the moment. Overall I really enjoyed it and will watch it again.