Last night, for the first time since I started driving the S in December 2012, my car did not charge overnight during its scheduled time. Not to say that it didn't try: So, I confirmed I had scheduled charging on, starting at 2:30, at 40 amps, charge limit at 90%. Clearly the car tried to start charging multiple times, but failed and seemingly gave up. So my question is this: is anyone else seeing this? If so, this might be a software/firmware problem. If not, it might be a problem with my power service, charger, UMC, or something else. I'm contacting Tesla about it to see if they can find anything in the logs, but wanted to see if others are seeing similar issues.