Just an update to let all you frustrated people who were or are in a similar boat with a terrible buzzing treo 600 that my 3rd treo 600 arrived and so far the buzzing is not evident. Fingers crossed but it is a terrrible feeling that at any time it might manifest itself again. One would think Palmone would address this concern openly.

Good luck to all, it is a fantastic device...when it works as advertised and priced! And thanks for all the help here on this site.