The "rattle" sound coming from the camera area is the accelerometer I believe. As for the clicky screen, isn't this because its a resistive screen so contact has to be made between two layers in order to register a touch? N900 is my first touchscreen phone, so I don't have much experience with other resistive screens, but I thought the somewhat "clicky" nature of the screen under a certain level of pressure was normal. Am I wrong?