Yes, that makes perfect sense now and I'm sure everyone would feel it fair. Of course I told them that her system was fine, but now we are dealing with ??? twice today on a sensor just a few days old. Instead of showing that she dropped like a rock to the 40's, it went to ??? Had to restart it after 3 hours and it was fine for a few hours, then back to ??? again, so I just pulled it. My son will be getting the free upgrade and doesn't mind waiting till December I think he was told.