Hi I've had an odd issue with my G2 since I purchased it Sunday. When I first took it out of the box, I went to Google Maps to see how it looked and it had my location pegged at my office in downtown Chicago even though I was 20 miles away and had never been down to my office with the G2 previously. Once I turned on the GPS signal, it found me okay, but every now and then it will insist that I'm downtown when I'm not! Frankly, I have no idea how it "knew" my office was downtown. On the iPhone, I never had to worry about turning on GPS signals or anything...is that just something I need to leave on all the time with the G2? PS love the navigation feature. Worked great for me the other day.