Has anyone else encountered this problem? I have an'04 Roadster that has developed an unusual starting problem. When I start the car for the first time of the day there is no problem; it starts normally. If the car runs for longer than about 5 minutes and I shut the car off when I try to restart the car all I get is a single 'click' sound. Each successive time I turn the key I get the single 'click'. If I let the car sit for approx. 5 minutes it will start without a problem. This problem has been present for about a week now and I have been through this starting routine about 20 times. I have a service appointment scheduled for Sat. Anyone have a similar experience or some thoughts?