On Sept. 1, 2006, Standard&Poor's Ratings Services affirmed its 'A' counterparty credit rating on United Health Group Inc. (NYSE:UNH) and its various ratings on UNH's operating companies. The outlook on all these companies remains negative. On Aug. 28, 2006, UNH confirmed via an 8-K filing that it had received "a purported notice of default from persons claiming to hold certain of UNH's debt securities alleging a violation of UNH's indenture governing its debt securities." This is believed to relate to the timing of supplying the trustee with SEC filings. Regardless, UNH has not yet filed its June 30, 2006, 10-Q because of an ongoing board-sponsored review into stock-option programs. This pursuit of immediate repayment, reported in the newspapers,