GPS problem?

I use this app on a 2nd generation iPod Touch, and I wasnt sure exactly how this was all going to work. When I tried it out, it seemed to work great! Thing is, the calorie count seems to be a little low, and the GPS feature was all screwed up. I wasnt sure what to expect, although, because since there would be no internet access or anything for the app to use, s the GPS might notve recorded at all. But when I got back home, it showed me a route that was in the general area of my run, only the line was messed up. First, it would show me running through lakes and houses, and when I moved the map, it would turn into a straight line. So I was a bit frustrated, because seeing that it actually had an idea of where I was, I had gotten my hopes up. Also, I had measured out my distance to be a mile previously, so I knew what distance I would be covering, but on the app, it says it was only 0.86 of a mile, which I hope is untrue (because otherwise Id be cutting my run short). But it was still a great stopwatch, and it DOES record my time.

Coo.l! about Run Watch - GPS Running Watch for tracking, mapping and memorizing routes