Pretty badly to be honest[1], seems like their local data protection authority is Ireland, who like to sit on their hands. That's partly why I'm waiting.
I have heard that the facebook "download your data" feature on the website does not give you all the personal data they hold. For that you need to contact them directly (maybe a letter), and quote data protection law to them.
[1] - http://www.europe-v-facebook.org/EN/Get_your_Data_/get_your_...