Does anyone use the MyTracks app for running, etc.? I was excited to try it out, but yesterday I returned home after recording a track and was disappointed to find a series of three squiggly lines which seemed to indicate that I was both a) running back and forth in peoples back yards, on their homes' roofs and in and out of their swimming pools, and b)was teleporting myself, off the GPS grid, several blocks away. An intriguing notion; but alas, in conflict with reality. Anyone have any tips on using the app, or any ideas on what I might have done wrong? It's a residential area in which I have a strong signal and have never had any issues with GPS. I had the phone in my pocket for most of the time (more about that later, I need to find a decent Droid armband or something if anyone knows of one) and noticed that one stretch seemed to be recorded (albeit inaccurately and in squiggly form) when I received a call and took the phone out of my pocket , so perhaps that has something to do with it? Any ideas appreciated.