YES. You are right. Each time I had the intuition it was a problem with VNC connection. Effectively, after initialising localhost in /etc/hosts everrything works right again. The good question is now why it comes in this situation ? I never modified this localhost. Is this an issue with system-config-network or another installation I made ? In any case, really THANKS for your help ! <div>2006/11/15, Robert Thiem <<a href="mailto:junk@remcc.org"> junk@remcc.org</a>>:<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">When first setting up FC6 I had an issue where I could start an FC6 Xen guest install but couldn't connect with VNC. I don't know if it's the same (I can't remember the exact messages I was getting), but it ended up being that "localhost" wouldn't resolve to an IPv4 address. This was due to a nasty combination of anaconda putting IPv4 and v6 entries in /etc/hosts and system-config-network trimming the "extra" v4 entry when run. Anyway I'd suggest: - Check that you can ping localhost - Check there's a localhost entry in /etc/hosts associated with <a href="http://127.0.0.1">127.0.0.1</a> (and not with ::1) - Run "netstat -antp" to see what ports programs are listening on Regards, Robert Thiem -- Fedora-xen mailing list <a href="mailto:Fedora-xen@redhat.com"> Fedora-xen@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/fedora-xen">https://www.redhat.com/mailman/listinfo/fedora-xen</a> </blockquote></div>