On Jun 1, 2011, at 19:05 , Jack London wrote: > Yes, I have tried many times many times in the same conditions is better than nothing, but you should try in different conditions as well. 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