I'm going to return my 910 that I've had for a little over a week. This morning it is locked up again even after properly disconnected from tomtom home. The first unit I received was DOA. This coupled with fact that the unit gave me some truly bizarre instructions over the weekend including trying to get me to make a U turn on an interstate. I do have a garmin c-550 unit that has a few issues but nothing like this. This forum has some very nice helpful people and I really appreciate that. Best of luck to everyone.