Well I failed 70-649 today. Break down came back with 880 on 70-643, 887 on 70-642 and 525 on 70-640

The break down for the modules was about 20 questions each on 643 and 642 and only 9 q's on 640.
I'd been using the Syngress upgrade book and it's really lacking in the basics for ADFS, ADRMS & ADRODC. A lot of time spent concentrating on installing roles (10 pages that all read accept defaults and click next...) but not enough on actual monitoring and maintaining of the systems.
I've picked up the official MS Press Training Kit for 640 to bolster me up on that, and I'll try and have another go next week.