I don't think that the drain is blocked, the toilette flushes no problem and it's a new bathroom (in the basement) in a newish house. The toilettes are also new. I've checked the outlside of the toilette numerous times as well as all around it and the only source of water or dampness comes from underneath the toilette and we are not currently using it, only occasionally flushing it to see if it will leak (I only see the water if I maneuver a piece papertowel under the toilette). The toto rep said to use a rubber seal and the plumber says to use wax? and the plumber also said that it may be condensation and not a leak???

I wonder, did they caulk around the bottom where it meets the floor. I guess condensation could happen if the room is very humid. but the condensation would be all over the tank. try caulking the base , let dry and try looking for the leak again. this should isolate if its coming from under the toilet or from the surface.

If it is condensation you will find condensation on the underside of the bowl near the back. To make absolutely sure that it's not condensation, pour about a quart of hot water into the bowl (just to get the water in the bowl, and the bowl itself up above room temperature). Then use paper towels to get it as dry as possible, then leave a fan on it for several hours without flushing. When it is dry as a bone, remove the fan, and put some ice in the bowl. Then wait 30 minutes. If it's condensation, it will be back. If not, then flush again and check for water. If it only comes back when you flush, then you need a new wax ring. Wax rings don't usually go bad, but sometimes during installation the wax ring doesn't seal correctly and it's not immediately apparent. To replace the wax ring you have to remove the toilet. It's easy if you have done it before, but it's not for everybody. good luck.