I have a N900 which is in excellent condition. It has been protected by the Zagg body armor since the first day. I have however been on a 2000 mile kayak expedition with the unit, so there are some places where you will potentially find sand. I continue to clean it and brush/blow it off, but every now and again I miss a particle or two. Other than that, the unit is in perfect condition.

And you are located where?