  We study the quasiparticle transport coefficients in disordered d-wave
superconductors. We find that spin and charge excitations are generally
localized unless magnetic impurities are present. If the system is close to a
nesting point in the impurity-scattering unitary limit, the tendency towards
localization is reduced while the quasiparticle density of states gets enhanced
by disorder. We also show that the residual repulsive interaction among
quasiparticles has a delocalizing effect and increases the density of states.
