I know Mr. Chambers is a thorough and knowledgeable reviewer, but as of late he seems to have an extra large ax to grind with Leica. Most of his reviews of Leica products are quite negative.
He just tested a Leica S and encountered AF problems. Incidentally, he also reported AF problems in his original S2 review. I've used my S2-P for 2,5 years now and like most other S system owners, I can confirm that AF is very, very accurate.
If he has these AF errors, assuming Mr. Chambers knows how to operate the camera, he has a faulty camera and he should not publish a review that hurts Leica. I understand he's not pleased because he feels his valuable time was wasted, but that doesn't mean he should bad-mouth a complete system like this.
I had planned to become a subscriber again, just to read his thoughts on the S system, but I guess I'll hold off for now.