Clear water drips under car - not A/C or rain related

Car 1999 Pontiac Grand Prix GTP 3.8, 91K miles

I have a clear water leak under the car. It's located under the car approx in the middle and just sightly back of the firewall. It actually seems to drip from a hole in the car framing. It's not related to A/C being used. It's not related to rain. There's approx. A half of glass of clear water puddle under the car. And not always will it drip. Car runs great.

Any ideas? Should I be concerned?

Thanks,
George :

Update 12/20/2006
I took my car to the local auto machanic I trust and asked for his opinion. Nothing to worry about, just water condensation. It builds up when you use defrost, heater etc and will release whenever from the system. :Lol: