I just upgraded from an earlier version of Maps 3 to this finished one. The earlier version was riddled with some of the problems below, but since updating, things have become much much worse. Even with nearly full satellite signal my speed, though constant in the car on an open road, changes from 0 to the actual speed randomly. Sometimes the red position arrow procedes off the top of the screen and I continue to get directions but the map is not moving. Often my position is shown as on another road nearby (not necessarily running parallel) and I receive instructions that are incorrect as a result. Sometimes I am shown as going backwards, and told to turn around. The satellite signal drops to zero and then back up to nearly maximum on open road with and without moving. This causes a spoken warning that signal is lost and then another one that it has returned, repeatedly. When tracking my travel as opposed to following a route, the compass is active but the map does not rotate correctly. When stationary, my position jumps about causing route recalculation statements. This software is worse than useless for route mapping. Unlike Mpas 2 on E71, I cannot rely on it for even simple routes - I end up taking wrong turnings all the time. Thanks