On Feb. 28, 2006, Standard&Poor's Ratings Services assigned its 'A' senior unsecured debt rating to four notes issues from UnitedHealth Group Inc. (NYSE:UNH): $650 million floating-rated senior unsecured notes, maturing March 2, 2009. $750 million, 5.25% senior unsecured notes, maturing March 15, 2011. $750 million, 5.375% senior unsecured notes, maturing March 15, 2016. $850 million, 5.8% senior unsecured notes, maturing March 15, 2036. UNH will use the proceeds to pay off a portion of outstanding commercial paper and for general corporate purposes. The ratings on UNH reflect its very strong competitive position, good diversification, effective management strategy, extremely strong earnings profile, very strong financial flexibility, and good statutory capitalization. UNH has good access to the external capital markets,