My Z22SE is leaking just below the alternator (at the opposite side of the gearbox/oil filter housing).
There is some oil on the alternator too, but not above it. Does anyone know what could be causing it?
My car is a left hand drive Astra Bertone. I don't know if it makes any difference.
From above (next to the air filter housing, (alternator at the lower right, under the hose)):

From under the car:

edit: The oil seems to be coming from here:
