I took 640-811 this morning after completing 640-821 Intro so I basically had a 3 month study period. Initially read thru the entire Sybex 5th edition 640-801 book, Net Academy, a bit of TechNotes and did a whole bunch of labs this entire month to keep the commands fresh in my head. I used the CCNA version and Packet Tracer to compensate of Boson's deficiencies.
I scored 967/1000!
Planning and design: 100%
Implementation and operation: 100%
Troubleshooting: 84%
Technology: 100%
I was terrified - I did quite well time wise, and had just over 10 mins to spare thinking there was going to be a major sim towards the end and it ended up I having only one Simlet very early in.
The end to this week would be a bit more perfect if I get that junior network analyst job I interviewed last week for!!
Good luck to all, and thanks a bunch to the forums for allowing me to lurk