AM Best...
...has downgraded the issuer credit rating of US insurance holding Conseco to single b minus from single b plus, and has lowered the financial strength ratings of its key life/health units to single B from single B plus and their issuer credit ratings to double b from triple b minus, citing Conseco’s delay in filing its 2008 annual report and concerns by independent auditors about the group’s ability to continue as a going concern.