All right, downloading repositories brought the Yahoo ones. Unfortunately, the database file name got generated as 2.db and the Maemo Mapper complained that it cannot create the database. I had to manually replace it with YStreet.db and YSat.db in my home directory.

Few more comments, while we are at it:
* For some reason, position jumps a lot (by as much as 70 meters). Don't know why. I am using the internal GPS and it is inside a building, so that may be a problem.
* Why are there no combined (sat+street) Google maps on the menu? Is there something special about them?
* Is it possible to have a quick on-screen button that centers the map on the current GPS position and two more on-screen buttons for the zoom (the hardware ones are somewhat hard to use in certain positions).
* Can I circle an area on the map with the stylus and have the map instantly zoom to this area? (would require capturing stylus trajectory and computing its extent when it crosses on itself)