Amazon, and I'll returned.They're sending me a new one. I must confess though, I almost took the refund option: many problems on this device are reported everywhere. However, I still have faith on maemo having a boost on 2010 (new apps / many bugs fixed).

Even if I can probably do something that make the phone work again, I don't think it's fair: I've just bought a brand new phone for $550 and I just like it to behave like a $550 phone. I just want to plug it into the wall, charge it and use it, as it should be.

Thanks for your posts, and if further info regarding R&D mode can be posted here, It would be interesting to try it before shipping my phone back.