The following tests, now in PW/tests/ do not work any longer: cluster2.in, paw-atom.in, paw-vcbfgs. They yield "negative dr2" in mix_rho. Any idea? P. --- Paolo Giannozzi, Dept of Chemistry&Physics&Environment, Univ. Udine, via delle Scienze 208, 33100 Udine, Italy Phone +39-0432-558216, fax +39-0432-558222