Rob,
I've owned three Ferraris and half a dozen Alfas. And even a Fiat, which my wife owned (I married her anyway). They've all leaked oil. It's what they do. As long as the oil is not oxidizing on the exhaust, it's OK. The streaks of oil flowing along the underside of the car have, especially in the case of Alfas, the benefit of inhibiting rust. It's what cardboard was invented for--to put underneath your car to protect the garage floor.
Having said that, I've just replaced the oil pan gasket, transaxle pan gasket, and one cam cover gasket (of course the forward one)on my 328, because the leaks had progressed to a stage where people were beginning to talk. So at this moment in time the Ferrari does not leak at all anywhere. But I know this is strictly a temporary phenomenon.
By the way, my lubricants of choice for the Ferrari are Shell Rotella T6 5W-40 and Mobil 1 75W-90.