Hi. I just purchased an'08 C300 and love the car so far. The nav system is pitiful however. I tried it out on the weekend with a routine trip to a well known destination, and it picked a very roundabout route and kept insisting that I go back and get on the much longer route even after I had made considerable progress on an alternative shorter route.
The maps show the roads all right but will not use them for routing.
Does anyone know if the map update disks include any software revisions. The system in this car is really unusable unless I'm missing something.

 

Bump! Anybody have any thoughts on this?