recently i have noticed that my navigation screen has rolling interference, like when you take something with a heavy electrical discharge to a monitor, like a cellphone. this happens at all times, anyone else have similar problems ?

This would be normal since cellphones do radiate about half a watt of EMF (its strong enough to light up a LED connected to a small loop of wire). It will interfere with anything not shielded, and you cant seal the entire LCD inside a metal can.

this happens at all times, regardless if the cellphone is on or off, the waves vary with throttle position

if you are still under warranty (and will be for a few months) wait to have it fixed in september...then you can get updated Nav disks and whatever else...the key is getting mad about it...

good luck