I just installed Navit for the first time and after some small problems it's working ok. I configured it to use both OSM maps and Garmin maps.

The OSM work fine but the program crashes after a couple of minutes.

I've also run the program using an unlocked Garmin map (first person?) and it seemed to run ok. The map had very little detail but i'm not sure whether this is the program or the map. Again the program crashes after a couple of minutes.

I've been using the xml files that hara linked in their post.