Hello there, I have been puzzled by the following. I can charge n900 only from a usb cord. When i plug in either my wall charger or one of my car chargers i get nothing. Has anyone experienced somethign like this? I havnt taken my volt meter to all 3 of my chargers, but they should work since they work for my girlfriends phone.. and yes, they are nokia chargers with the right voltage and current. any ideas?