The requested domain name is not configured for any web site: http://www.medicalnet.pl/Nowa-Sol--550-tys--zł-na-oddziały-szpitalne,wiadomosc,25,pazdziernik,2010.aspx
If you're an administrator of this site, you need to go to Site Manager -> Sites and use the following domain name either in the Site properties or add a new domain alias: www.medicalnet.pl