We reconsider the recently proposed connection between density of states in the so-called ``non-Hermitian quantum mechanics'' and the localization length for a particle moving in random potential. We argue that it is indeed possible to find the localization length from the density of states of a non-Hermitian random ``Hamiltonian.'' However, finding the density of states of a non-Hermitian random Hamiltonian remains an open problem, contrary to previous findings in the literature.