The nav system in my '03 LS has come up short a couple of times lately. It couldn't find an address in a neighborhood 20 minutes away, instead wanting to send me on a 450 mile drive to another state. I put this down to the DVD being outdated and thought it was a new housing development. Turns out the streets have been there for 40 years or so. Anyway, what's the process of getting the most recent version of the nav DVD from the company? Anyone out there have a burner?