Not sure if this is the right category for this, but I picked up an N800 today, and while playing with it in a quiet room tonight, I noticed that there is a faint, but very distinct, buzzing or humming sound coming from the unit. It isn't always there, but seems to be there when ever you are doing something that requires screen writes, such as opening a browser window, or scrolling down on a web page. When you scroll, it buzzes for a couple of seconds, then it's quiet again until you scroll or move off the page.

It's not just in the browser either. I've noticed the sound while looking through the various apps on the device.

Any ideas? Has anyone else noticed something like this? Perhaps I have a defective unit? If so I guess it's off to replace it tomorrow.

Thanks.