FYI, I tested my new 7 in the car today. Fired up GPS Test. Had 16 Satellites. Fired up NavFreeUSA to use for navigation. The GPS lock lasted about five minutes, then quit. Rebooted it, worked for five minutes, then quit. Looked at GPS Test...it said three satellites, but not recording any position data. It didn't change.
So, I turned Airplane Mode on as a test...GPS icon still kept flashing, searching for position. Turned GPS off. Couldn't turn it back on. So I rebooted it again. This time it came up with NO GPS!! It's not on the Settings shortcut menu OR on the Settings menu! It has completely disappeared! GPS Test reports "No GPS".
They definitely have some issues to resolve. I think this one is going back to Best Buy.