When someone utilizes the touch screen functionality of the 7970G phone it usually works. However, when you browse to a user's name via a directory and touch the name to dial that person the phone freezes up and will not work again until it is re-booted. I am able to successfully dial the same person when using the navigation buttons on the phone, there is only a problem when I try to use the touch screen to dial. Any ideas on why the phone is freezing up? Thank you.