I bought my car in March '09 with the mk4 nav and I believe the 2006 map disc. I recently updated these with the 2010 discs (now that they split North America into two) and now the nav isn't quite as smooth as before. Mostly it is fine, but when I'm on the freeway, it keeps telling me to bear right or left in a mile or two, when I have a long way to go staying straight on the same interstate. It's almost as if it's telling me to take the long, gradual turns of the highway itself (duh... I'm supposed to turn here?! You don't say...). Has anyone experienced this quirk? I have it set to "With Highways" and "Fastest Route". It also has momentarily gotten lost/confused for a few seconds. Forget what software I'm running... I want to say v26... pretty new but not the absolute latest.