Darden Restaurants Inc.'s second quarter was far from appetizing, as the owner of Olive Garden and Red Lobster watched its net income plunge 37%. The Orlando, Fla., restaurant company saw the sour numbers coming. Earlier in December, citing a litany of factors including negative blow-back over its response to the new national healthcare law, ineffective promotions and Superstorm Sandy—for its decision to lower expectations for the quarter.