Hi Guys,
Just for the record here's a few pictures of a laptop power socket that used lead free solder. You can see the erosion caused by poor electrical conductivity of the joint between the center pin and the circuit board. The hole was originally plated through but there was little left of the plating. An open circuit and discharged battery resulted in a non working machine.
Check in "alt.binaries.schematics.electronic" for the pictures.
-- Best Regards: Baron.