The Federal Deposit Insurance Corp. has sued two appraisal service providers for allegedly flawed appraisals on some 414 mortgage loans that caused millions of dollars in losses to the now-defunct Washington Mutual Bank. Separate complaints were filed May 9 in the U.S. District Court of Central California against CoreLogic, Inc. and LSI Appraisal, their parent companies and various affiliates for alleged gross negligence and multiple contract violations in connection with improper appraisals delivered to WaMu in 2006 through 2008. Out of the thousands of appraisals provided by the two companies to WaMu during the period, the FDIC claimed...