Shari - Just the type of information we need. Couple of questions for you: what was your phone charge like in the morning? If it was really low, you might have been at risk of your GPS being shut down by the BB. (Maybe you charged it in the car on your way to lunch?).

As I mentioned in the other post, we're working hard to balance battery usage and speed sensing. I'm sure we don't have it totally right yet but following some steps like putting your phone on the plug-in charger at night have worked for us up here.