  We investigate the limit of vanishing quark mass in quenched lattice QCD with
unimproved Wilson fermions at $\beta=6.0$. Exploiting the correlations of
propagators at different time slices we extract pion masses extremely close to
the `chiral limit', despite the presence of `exceptional configurations'. With
this at hand, the existence of quenched chiral logarithms can be demonstrated,
provided, finite size effects are small. With reference to the phase diagram
proposed by Aoki also the range $\kappa > \kappa_c$ is investigated. The width
of a potential parity-flavor violating phase can, if at all, hardly be
resolved.
