Mine could be the same place actually. It looks to be above the sump anyway.
I've been doing some bodywork painting at the weekend so not had chance to look. Its actually over a pit in my dads garage at the moment, so tonight (if I get chance) I'll wipe it all down, run the engine warm and see if I can see where its coming from. Oil's covered everywhere over the period a few months, but I suppose its not always a bad thing as it keeps the rust away!