  For the 3d ferromagnets iron, cobalt and nickel we compute the spin-dependent
inelastic electronic lifetimes due to carrier-carrier Coulomb interaction
including spin-orbit coupling. We find that the spin-dependent
density-of-states at the Fermi energy does not, in general, determine the spin
dependence of the lifetimes because of the effective spin-flip transitions
allowed by the spin mixing. The majority and minority electron lifetimes
computed including spin-orbit coupling for these three 3-d ferromagnets do not
differ by more than a factor of 2, and agree with experimental results.
