FILE - In this Feb. 4, 2010 file photo, Mel Gibson and Oksana Grigorieva arrive at the 'Edge Of Darkness'  Premiere in Paris. (AP Photo/Jacques Brinon, file)AP – Mel Gibson’s breakup from Russian singer Oksana Grigorieva was supposed to be a quiet affair, but a confidential settlement and sealed court case haven’t kept the former couple’s troubles from hitting the spotlight.