Arafat Admits Palestinians Made Mistakes RAMALLAH, West Bank - Yasser Arafat acknowledged Wednesday that the Palestinian Authority has made "mistakes," but the rare admission appeared to be aimed more at deflecting criticism about his corrupt government than making real changes.    In a decade at the helm of the Palestinian Authority, Arafat has resisted attempts to get him to fight official corruption, reform the security services and relinquish some of his near-absolute powers...