Tranny leaking fluid

[clean2g]

I moved my car(awd 2g) today getting ready to change the oil and I saw two almost dime sized drops of oil on the floor right under the tranny. So I jacked the car up and looked at the tranny and the area near and around the tranny drain hole/bottom side of tranny closest to passanger side was damp with tranny fluid. I thoroghly cleaned the whole area and examined for cracks.. but as far as I could tell there are no cracks. It's not leaking from the drain hole because the oil-damped area extends quite higher than the drain hole. Could it be a seal or something? It had to have started leaking within the last few days because the oil is very fresh. I may have over filled it when I installed my new clutch but.. I'm not sure.. anyone have any ideas, and is a tranny leak a major,get myself a second car, problem?