  Strictly adhering to the standard supersymmetric seesaw mechanism, we present
a neutrino mass model which allows successful standard thermal leptogenesis
compatible with gravitino cosmology. At least some of the neutrino Yukawa
couplings must be much larger than the naive estimates following from the
seesaw formula. This leads to large BR(mu->e gamma), detectable in the next
round of experiments. Ratios of mu->e gamma, tau->e gamma and tau->mu gamma
branching ratios are predicted in terms of the measurable neutrino mass matrix.
