Hi. I have an XL which works fine when it works. But since recent updates, the device takes forever - if ever - to detect available satellites. The other day I programmed the XL and it did the normally good job of planning a route. But when put into service in the car, it took some 15 minutes to detect satellites and begin normal operation. No question of signal blockage due to obstructions. Other times it works fast. Any experiences or suggestions? Many thanks.