smhirsch
Getting familiar with the group...
All of the Tech packages (both 2009 and 2010) have the 4/2008 database since an update hasn't been released since the car has been in production.
It's unknown whether the update will do anything but update the map database, so while it's possible that it will address that nag, don't count on it.
You can "cancel" navigation by either using voice command to "suspend route guidance" or if you're in map view, pressing the controller and then selecting "suspend route guidance" from the menu that pops up.
The map update IS available (I got mine yesterday from the dealer) and has map data labeled version 3.0 and a release date stamp of 08/2009.
It's a 3 DVD set that needs to be installed by the dealer and takes about 3 hours from start to finish.