S'pose it's because we Targa 40 skippers spend more time looking forward than backward as we tend to catch up a lot! /forums/images/graemlins/cool.gif
E-series seems ok but I also had to upgrade software to run Navionics Platinum.
I had a prob with my RC400 handheld at the weekend, it kept crashing out into the operating system with a fault listed. A factory hard reset fixed it though.