Saw this when it was released at the cinema, really enjoyed and finally bought it last week. Was in the mood for a comedy so stuck this on today. It got to the bit in the cave and the sound went funny. It was as though there was some reverb or echoing and the lip synching was about three words behind the soundtrack. It carries on like this for another 20 minutes or so until the end of the film. Has anyone else experienced this? I did wonder if something had gone tits up with my surround but I tried xXx straight afterwards and everything was loud and pin sharp.