I lke the NAV system also. I actually got to go to a comparison focus group on NAVs and actually prefer the Porsche system. The rotation is suppose to happen, it is a NAV system and not a paper map. All NAV systems I have used rotate. Minor streets will disappear when zooming out, all NAV systems do this. Even with Google maps, they do this and they have far more display resolution than the PCM screen. My bet is that your VCR is blinking still.