Today my nav system would respond very very slowly. It took forever to enter Montgomery(sp?) as the city. The letter would change colors as you touched it, but I'd drive a mile or so before it would show up in the city field. Later, when I finally got the destination entered, the gps was about a mile or more behind me! It is a 2001 Ody, so maybe it is about time. Sometimes it gets confused and I have to pound on the dash, but that is probably a loose connection.... Any ideas?