My navigation just stopped working. Giving me a error message that says cannot unlock map data or something like that. Thing is I've had it for 9 months, bought it new and has 8000 on it today. I know things break, but I've been waiting a month for a replacement and called customer care and they told me it would be another month before they get one to ship to the dealer. Wth? Just very frustrated, I suggested they put a 730 unit in it and send me on my way but they weren't having that. Anyone else had problems with their nav? Or having to wait months for a warranty repair part?