I am also a new member who has been lurking on this forum for a while. It was finding this fantastic app and this thread that made me register so I could reply.

I want to say two things:

1) modRana is a fantastic application. It is amazing that it is being developed by one man in his spare time while other, supposedly professional applications, developed by large teams as their main job, suck big time (no specific apps shall be named ).

2) I managed to reduce the FAT32 overhead significantly by reformatting the N900 vfat partition through Windows Explorer with the smallest allocation unit size it let me (8K as opposed to default 64K). I started off with 800K worth of maps taking up 4.5M of disk space. After the reformat, they took only 1.2M. Of course, you need to backup everything to the PC first and restore it afterwards, do not blame me for losing your data if you don’t!