As usual, we noticed the frame builder wasn't connecting happily with the rest of the computers just as we were about to lock some stuff (we never notice it being bad when we're not trying to use the frame builder....)
All the big rectangles by each computer were white. I restarted daqd, and that brought most things back. c1lsc and c1sus needed their mx_streams restarted manually to get everything green again.
I've had about enough whine with my computers for tonight.