the point just about nokia support for n900, really its too weak, no basics like real map app, too long time to get few updates,

i think nokia will never get real software updates for n900, almost nokia will release new Ovi with turn by turn but for new device that's comes next the n900, maybe with meego

they in nokia play with software features (maps, mms, real 3G support ..etc) to enable - disable as a marketing strategy to release more devices and get more sales.