I tried to look at fb1 again today, but still haven't made any progress.
The one thing I did notice, though, is that every hour on the hour the fb1 daqd process dies in an identical manor to how the fb daqd dies, with these:
[Sun Oct 4 12:02:56 2015] main profiler warning: 0 empty blocks in the buffer
errors right as/after it tries to write out the minute trend frames.
This makes me think that this new hardware isn't actually going to fix the problem we've been seeing with the fb daqd, even if we do get daqd "working" on fb1 as well as it's currently working on fb.