I've been up for 3 hours, and have wondered why it was still so cold on this side of the house.  My hands/feet are like ice! 

No wonder... turns out that the heater never kicked in, 

and the is thermostat registering only 60 degrees!

  It did that the other morning, also.  

I fiddled with it, and while it does seem to be running now 

we might have a problem...