If possible, you should return it. The amount you've put into purchasing N900 is huge and Maemo is a new half baked OS.

I have learnt a lesson that never buy a half baked OS but on a personal note I am happy with what my N900 can do.

Wait for N8, wait for meego, Look at Android, New Iphone OS, New Blackberry OS. There is so much new coming up.