heat

Has anyone noticed that even on cool days when vent is turned on heat comes out instead of the cool outside air? I also have hear some people complain that the leg area of the driver compartment gets quite hot, I also noticed this and wonder if the vent door is operating properly on my car. It only seems to blow cold air if I run the AC.

I also remember seeing reference to a TSB for a similar problem but can't locate it, if anyone else remembers this or where to find it or if they have had to problem resolved please reply.
Thanks