Facebook Photos Privacy Help?

[dreamer.]

I posted a picture on facebook, and i have my privacy settings worked out - only my friends can see ALL of my posts. Well, I had two friends tagged in this photo, and someone i have never heard of (i had 4 mutual friends with them...) commented on my photo. I went to the album privacy and it said Friends Only. Why was this person able to comment on my photo and how to I change it??
Thanks, well thats really stupid. Im having all my friends untag themselves from my pictures

[Mystic]

Read the update tool when facebook notes it, not just scam through it or ignore it. They changed the privacy rules, if you are tagged in something, the friends of the person can see it.

[Brent Mcgivern]

The guy was probably a friend on your page that you dont remember adding, there are some people on my page that i dont remember adding either, they comment all my shiz and im just like, "wtf? Who are you?" ... Its weird, Well, add me on fb, maybe we can talk sometime if you want, Name: brent mcgivern