Yeah, API response time is really high, started spiking about 90 min ago https://developers.facebook.com/live_status look at blue which is today compared to orange too which is yesterday. Posting to timelines from xenForo is failing with a timeout as well. Should clear up soon.
Anonymous Brazil did post the facebook attack was necessary to "protect data of protesters" about the big protests Brazil as been seeing recently. This can be because the protests are organized in masse in Facebook and Twitter.
There is a war with this stuff going on in the internet, we just don't notice it!