Well, my GPS seems to work great, except for this time... I was in the Detroit airport and I came from Elmira, NY (and the last time I was in Harrisburg was before I even got my iPhone). I even restarted my iPhone, to no avail. When I was taxiing in, I got the proper GPS, but when I entered the terminal, it didn't work. When I was in C3, it found me to be in Detroit (no specific dot since I was under too much stuff). Well, take a look. Keep in mind I was in DTW.