A computer tape containing personal data of 650,000 customers of about 230 retailers including J.C. Penney is missing, credit card issuer GE Money said on Friday. Richard Jones, a spokesman for the General Electric unit, said a backup computer tape being stored at a facility operated by Iron Mountain, an information protection and storage company, had been lost. Jones added that Social Security numbers of about 150,000 people were also included on the tape.