Can i use my nokia n810 for 15 hours (ever gps with maemo mapper tracking and some hours (4-5) with canola or other player/apps.certainly, when i'm not using player or other apps i take off the screen)?? Another question: Is possible to track gps without maemo mapper, for reduce power use and system resources? Is there any app that work in background, without maps (I want only the gpx file or something to see the track on my pc with google earth/maps or another map...). Maybe it wil be good Gps tracer? What do you think about? Does using gps tracer save more energy and system resources than using maemo mapper for tracking? Thanks Bye