While Saudi Arabia didn't outlaw slavery until 1962 (officially that is) we can see that it is practiced unto today.
Also multiple wives and concubinage.
Particularly consider sex slaves.
http://www.answering-islam.org/Silas/slavery.htm
Oman didn't outlaw it until about 1970.
http://en.wikipedia.org/wiki/Islam_and_slavery#Twentieth_Century_suppression_and_outlawry
Still practiced widely throughout Mohammedan Africa today
(http://www.beholdthebeast.com/272f9a60.jpg)