Is anyone here using the Garmin onboard app on iOS 5- the one where maps are stored locally on the iPhone, NOT the app where it is downloaded as you go? This particular app- Garmin USA- hasn't been updated since before iOS 5 came out, and if you sort the reviews by recency, there are a number of complaints. And I searched here, but it seems most people are using TomTom, Navigon, or Motion-X. Can anyone confirm this app works as well as it should in iOS 5, with getting a GPS signal etc.?