You should have seen the stuff in our house when we bought it. If two nails would hold it, it had 15. The walls were plaster and like 8" wide strips of drywall with big holes drilled in it. New take on plater and lattice, the dry wall was nailed about every inch. I almost feel like I spent more time pulling nails when we remodeled this house than anything else. There were even extra nails in the tack strips for the carpet. I think the nail thing is just in some people's DNA.
Our old house too, there was a rip in the carpet someone had "fixed" when it was a rental, by putting I would say 200-300 small nails in about 24"x12" area. I spent about 2 hours with vice grips pulling them all out, so I could refinish the hardwood floor underneath.
