Hi there...I am wondering if anyone else is having issues using the "Check In" feature while on the 3G with apps such as Facebook or Four Square? It works fine for me if I am connected to a wi-fi network but once I am out and about using the 3G it appears the GPS/Sat can't find my location...I also seem to have this issue with the maps; it just points to my last known wi-fi location. It kinda sucks cause I can't check in anywhere with foursquare and get the coupons/discounts. Any help appreciated. Thanks.