I discovered a bug in my N3 Navi that I hope isn't indicative of a more serious issue. I had programed in an address and while driving South on the 110 Freeway, I was instructed to take the Pacific Coast Hwy exit. I did, and then was instructed to get back on the freeway, going the same direction!
I have no idea why it does this but it did it the same way 2 days in a row. A bit further on it instructed me to get off at one exit, then changed and had me get off at another.
It still got me to the address, but it was pretty weird.
regards
~Marc