For the last few weeks the display on my satnav has started to flicker with the black areas turning blue. This is worse at the bottom of the screen but is slowly moving up. The effect is like the screen filling with blue water. Otherwise the satnav works OK. The display on all other features including the TV is fine - just the satnav. Has anyone else had this problem? My dealer had the car twice and decided that it needed a new screen. Apparently these are on back order and cost £1,000 so I'm glad its still under warranty (just). However,Jaguar want to see the car before they will approve the work. Am I the first person to get this problem?