SEC filing: Sun shareholders sue to block Oracle acquisition. http://bit.ly/IDkWD # Today’s Webcast (May 8): Materials Available Here for “Hedge Funds: A Brave New World of Regulation and Enforcement.” http://bit.ly/HedkG # US investors ask courts to allow UK schemes to participate in RBS class action. http://bit.ly/x51ZT # Investors Sue KPMG, Feeder Fund in Florida State Court Over Madoff Losses. http://bit.ly/1536MW…