Combine sugar, cream cheese and butter, mixing at medium speedom eletric mixer until well blended. Add eggs, one at a time, mixing well after each addition. Blend in pumpkin. Add combined dry ingredients, mixing just until moistened. Pour into 2 greased and floured 9x5 inch loaf pans. bake at 350 degrees F, 1 hour or until wooden pick inserted in the middle comes out clean. Cool on wire rack for 5 minutes; remove from pans.