Heads up...FB has made it easier for people to snoop on your page by just entering your name into the search box. This gives people instant access to things you have connections to, like what posts you have commented on and what you have 'Liked', including photos that you're tagged in.
I tested it on someone who normally has their page on lock-down and I got access to a lot of their stuff that I've never been able to see.
I've been in my privacy settings and it's really confusing and I'm not seeing a huge opt-out button. I keep testing it and my stuff is still out for anyone who feels the need to snoop. You might want to get into your settings and try changing some things around.