Wow, just reading this thread for the first time. Unfortunetely, this should be a lesson to all (at least all those not living in podunk nowheresville towns anyway...
No matter how many times you may have done it and had no problems, Don't leave the keys in the car!!!!
It'* a really easy habit to get into to take them out of the ignition and with you every time you get out, no matter for how small a time it is.
Sorry for your forum friend, though... :(