They all leak. MCompact is living right if he only has seepage, I would be happy with just seepage.
My oil pan bolts were loose as I had only tightened them to BMW spec when I reassembled the motor. Once the 318is was run for 5,000 miles after reinstalling the motor, it was clear to me that the oil pan bolts weren't snug and so I snugged them up some. I wasn't implying that yours would also leak from the same area. Actually, they most frequently leak from the timing covers (top or bottom) either from the gaskets between the cover and the block or between the covers. They leak elsewhere too.
I need to put it back on my lift again and clean the underside some and again start looking for where any leaks may be coming from to see if they are easily addressed. Most of the exercise in pulling the motor and freshening up the spare motor I had with all new gaskets from top to bottom was to stop oil leakage...
:-(
Regards,
Rich