We discuss the computational problems when analyzing general, non-hermitian
matrices and in particular the un-modified Wilson lattice Dirac operator.
We report on our experiences with the Implicitly Restarted Arnoldi Method.
The eigenstates of the Wilson-Dirac operator which have real eigenvalues an
d correspond to zero modes in the continuum are analyzed by correlating the
size of the eigenvalues with the chirality of the eigenstates.