We used the installed Nav system over the weekend. We found that the system got totally confused a few times. For instance, iat the start of the trip from our house, it recommended a route that we know is longer, seemed to be going in the totally wrong direction. At one point, on the highway, it kept telling us to exit when we knew we had to drive 30 more miles before exiting.<p>I've had a portable Garmin for a few years, it rarely does this type of stuff. I checked all the set points, everything looks fine. Anyone else have problems like this?