I got my N900 back in May 2010. I started noticing wear on the keys about 4 or 5 months ago. Now the black has rubbed off of all 4 arrow keys and the black is gone from at least 7 other keys. I am still under warranty. So I am going to try to get it replaced. But I consider this to be pretty shoddy for such an expensive device. The N810 and N800 are more durable in my opinion.