Coolant Leak...passenger footwell?

[Derek Pulvino]

My patience is continueing to dwindle.  Just replaced the power steering 
hose, thermostat, flush the coolant sytem, and replace the coolant, and now 
this.  Noticed a couple of days ago I've got a small leak of coolant landing 
on the floor mat on the passenger side of the car...front seat of course.

Notice some staining, noticed the color (blue for the survey), and ran my 
finger across it today and it is certainly wet right now.

Any ideas on this?  If it's something like a heater core I may just tnt the 
car.

Derek P