Seems like I've missed some great routing application so far! I just read the whole thread but I still have some questions (partly because I can't remember what was written on the first 10 pages. ):

1. It seems to me like marble heavily relies on raster maps. Can it work with vector data only and still show useful information on the display?
The reason why I'm asking is that up to now I use Navit and I have a OSM dump of Germany in binary format on my N900. I'd like to use the same file in Marble and usually I neither can download map tiles for routing (because there's often no internet connection available) nor can I do that in advance since I often don't know which tiles I'll need.

2. I've swapped the home and MyDocs partitions on my N900 which means MyDocs has only 2GB. So in case 1. would turn out positive can I tell Marble to look for the OSM dump not in MyDocs but in home? Afair all the discussion in this thread about alternative map locations were still on the MyDocs partition.

3. Does Marble support indirect routing pathes (i.e. additional waypoints)? This is the main reason why I'm looking for a Navit replacement.
I can't check right now since I don't have my N900 at hand. I had a look at the Debian marble package but although they seem to be related it's appatently not the same software that is discussed in this thread.

Edit:
4. My system has a mixed locale. The keyboard layout is US, the rest is German. Would Marble use metric or imperial units on my device?