Just today, I too had the same problem. I was right in front of my destination but it was asking me to keep going in a new direction. Until today, I did not realize that this problem even existed.
Also, another question: Lets say we picked a destination. It shows the exits to be taken. In the previous (98) version, I could tap ahead to see all the exits to be taken. But now, we cant fast forward. Besides, I can't tell whether they are exits which I need to take or just names of passing exits. It seems there are two options. I did not bother to look into it too much. Too many choices in this system! Certainly, its superior to the Idrive of bmw, audio and merc but they are making it too complicated. I find that the $300 Garmin is much more user friendly and simple to use!
These systems are nearly alway on the money but they are made by humans and humans make mistakes. Anyone expecting perfection in a vehicles navigation system is only fooling themself and should be overjoyed by all the accurate destinations it delivers and stop complaining about the 1 or two cases it wasn't spot on. There is so little to complain about with this car that some of us just feel a need to dig deep. This forum is incredibly boring and it's Lexus to thank for delivering such a fine product with very little to talk about except the postive things which so rarely make it on this site.