worked briefly today. then the right side of the touchscreen was no longer responsive. if this is the issue then it would prevent me from hitting the I agree button. was able to zoom in and out on the map but then only in as the "-" button no longer worked. also found on other menus that only the left half of the touchscreen was working. anyone know how this thing is designed. i think it would just be a serial connection for the whole touchscreen not two separate ones which would eliminate the wiring or connection as a probable cause. of course, that leaves a flaky display which would be expensive to say the least. ideas?