This is not exclusive to Nokia so although it seems Nokia are being a pain, it's just most international corporations who do this.

Secondly, Why are you unhappy with the N900? you initially say you really like it - but because it has a fault you're unhappy with the whole device as a whole? things go wrong with gadgets all the time. That does not qualify as a reason to say you dont like that specific product.

Lastly, as someone has already mentioned buying things internationally runs you the risk of this situation exactly. It has happened to me and i've learnt from it. Good luck resolving it, and oh remember this Forum really isnt a place where Nokia come to see who is displeased with them. Its a great community for people to discuss and help each others but isnt a Nokia support portal.