I was using my GO 6200 this evening to travel back from Luton to Birmingham. Due to heavy traffic on the M1, my sat nav routed me via Buckingham and Milton Keynes and then up the M40. I was expecting the sat nav to wake up at the turn off for the M42, but there wasn't a peep from it and no mention of the M42 turn at all. The only thing that appeared on screen was the small lane guidance icon, telling me which lanes to use and that only appeared pretty close to the junction. If I hadn't known that I needed to take the M42 West route, I could easily have got confused and taken the wrong route. Seems like another problem to chalk up to the list.