I'm wondering if it is normal to hear dripping noises around the middle of your car after you shut off your engine for about 10 minutes. I went out and looked underneath of car but did not see any wet spots.
Had you been running the A/C or defrost prior? If so, could be the condensation overflow, but that should drip on the ground in the area where the firewall/dash are.
+1
It's amazing how much water collects on and under a car. When I park my Mazda 3 in the garage after driving in the rain, I get at least a quart of water draining off of it.