It flocculated quite well for me as well (also a Brown ale) however, it didn't attenuate as well as I would have liked. I think it finished somewhere in the neighborhood of 1.030, and I would have liked closer to 1.020 or slightly higher.
The brown is good, nice warm toasty flavor to it, and it turned out to be much more of a session beer, but I would have liked it just a tad dryer.
I tried warming it up closer to 70 to see if it would finish, but it never dropped lower.
Your mileage may vary of course.