I use my old 2720 in the Jeep. It is great for "take me to X address" or "take me home" kinds of stuff. Anyway, this morning I heard the telltale screen touch click (except it hadn't been touched) and it was as though someone had dragged the map a little, as there was the Back button. Any way, I returned it to the live scrolling. This happened a few more times and then the screen went into a calibration mode where it was all blue with two perpendicular lines and it asked me to touch the dot. I would do this, but then after one or more, it would not recognize that I had touched it. When I powered it off, it came back up normally, but then started with the self-made screen touching and then calibration. Any idea what gives? I would hate for this unit to go belly up on me, but as of right now it is pretty useless.