In my area there was a construction that lead to closure of a road. They finish and now I drive on that portion every day, but Garmin still doesn't know is 'finished' when coming home from North (but OK when I come from South), it's like missing one of the turns and tries to route me around. If friends with Garmin try to come to my place driving from North will end up in a wild geese chase.
For three years I keep reporting the error to both Garmin and Navteq (Nokia now). Still no result. I gave up.