AO2:
Cryo Temp Thermistor problem finally identified.
+side lead on sensor side of white Omega connector is 
subtly, but definitely broken. 
Fred Moore says this can probably be fixed with solder/wire.

I just watched the clock on AO2 advance from 20:59:57 to 21:00:00
and then suddenly return to 20:59:57 and repeat those three seconds...

MED:
Um... nothing to report...