Recently I have noticed that when I first start up the Juke the SatNav has a very thin blue line (approx 0.5mm thick) at the top of its screen as shown between the arrows on the first picture. However, when I pick up speed it gets thicker as shown between the two arrows on the second picture. This second picture was taken at abour 60mph and the blue bar was about 8mm thick. Has anyone else seen or heard of this problem before and if so how was it rectified?The car is still under warrantee as is only 2.5 years old so I assume if it is a fault it can be fixed under it.Pic 1http://postimg.org/image/l1wrntq3j/Pic 2http://postimg.org/image/h6tdl96xr/