I have never seen any puddles on the garage floor. I checked today for anything and I saw that where the intercooler is bolted on the passenger side seemed to be wet with oil. Isnt this near the PCV valve? I am planning on replacing that.
Also, I had my local dealer to an oil change and they said that the turbo drain pipe might be leaking? On a side note, I go to the dealer because they let me bring my own oil and filter and charge me $11 labor. For that price, its not worth my time to jack up my car.