Hi
I just put my board together, 2.1, and when I tested the voltage for vin/grnd it was 10.5 while the vcc/ground was 6.6. Is this okay to be this high? It was the same with both usb and ac power.
Are you sure you are measuring DC voltage? Somehow the two numbers you are getting are both twice as much as what they should be, which made me feel perhaps you should check if your multimeter is set on DC voltage measurement.