RIVERSIDE, Calif. - The bankrupt City of San Bernardino, Calif., on March 12 filed a status report in the U.S. Bankruptcy Court for the Central District of California concerning the progress in its Chapter 9 bankruptcy proceeding in which it says 260 claims have been filed against the city for a combined total of $503,278,000, with an additional 80 claims filed in unstated amounts (In Re: City of San Bernardino, California, No. 12-28006, Chapter 9, C.D. Calif. Bkcy.).