  Either ATIC or Fermi-LAT data can be fitted together with the PAMELA data by
three components: primary background ~ E^{-3.3}, secondary background ~
E^{-3.6}, and an additional source of electrons ~ E^{-g_a} Exp(-E/E_{cut}). We
find that the best fits for ATIC + PAMELA and for Fermi + PAMELA are
approximately the same, g_a ~ 2 and E_{cut} ~ 500 GeV. However, the ATIC data
have a narrow bump between 300 GeV and 600 GeV which contradicts the smooth
Fermi spectrum. An interpretation of the ATIC bump as well as the featureless
Fermi spectrum in terms of dark matter models and pulsars is discussed.
