Has anyone experience an issue with their Maemo Mapper (I have the N770) where after idling for awhile the screen turns white? On my recent road trip that covered over 800 miles, any time I stopped at a gas station or rest area, my Maemo Mapper would be recording my trip (red line following the green line, route). When I got back into my car, the screen was white every time and each time I had to wait patiently for it to show the map again (over 5 minutes it seemed). Sometimes if I pressed a button the screen would show the map again, other times it wouldn't do anything. Any ideas what may be causing this?