I found this fascinating quote today:
There are a lot of misconceptions out there about Murphy’s Oil Soap and hardwood floors. After a long conversation with technical support at Murphy’s here’s what I found out. These questions and answers as well as more information are available on their website. If your concern with Murphy’s was like mine and concerned the rumors about Murphy’s leaving a film on hardwood floors, check out a previous post addressing this concern.floortalk.wfca.org, FloorTalk – for all the latest flooring fashions, Jan 2009
You should read the whole article.