With the help of commissioners, I have been cleaning house on the SDF alarms today and last Fri.  Still a few to go...

However, when we switched a few things on some SUSes today during one of the lock loss periods, we noticed that the SDF put a strange time stamp on the DIFF.  See the ITM DIFFs attached.  We added a LIMIT value and turned the LIMIT switch on all within the same few minutes just now.  However, on both the ITMs (and the unpictured BS) the switch time stamp shows last Wed at ~11:57am.  What the heck?