I was running my resolution T at the leap second but LH 5.0 did not capture the blessed event! So I don't know how it was reported. Then I noticed that the temperature took a dive afterwards. That seems odd. I have only been running this a few weeks and may not have noticed such occurrences. Also I notice a tight correlation between the temperature and the rate in the graph. I can't tell which is the cause and which is the effect. When I first noticed this I put the Res T in a small cardboard box to insure that air currents weren't effecting it. There was no change in the behavior and no change in the temperature excursions. What could this be? I have attached a screen shot that shows the temperature dive. Pete.