When I initilize the program it works fine for a short while. Then guages begin to freeze and give erronious information. For example. My MPG will show the correct instant mpg (3-9 mpg), then it will indicate 455 mpg and freeze. Also the Cruse mph and the actual mph will freeze. Some guages continue to work while others are frozen. I can exit the program and then run the program and it will will work correctly for a short time. I am using a Dell laptop and windows XP. Also I am using Delorme GPS at the same time, however, if I just load Silverleaf by itself, the same thing happens. What do I need to do? Richard