  We consider the high energy behaviour of the amplitudes for pair production
of charged leptons, quarks, Higgs bosons, sleptons, squarks and charginos at
lepton colliders. We give the general expressions of the leading quadratic and
subleading linear logarithms that appear at the one loop level, and derive the
corresponding resummed expansions to \underline{subleading} logarithmic order
accuracy. Under the assumption of a relatively light SUSY scenario and choosing
the MSSM as a specific model, we compare the predictions of the one-loop and of
the resummed expansions at variable energy. We show that the two predictions
are very close in the one TeV regime, but drastically differ in the few ($2,3$)
TeV range.
