Not able to create connections to http://dmoz.org/http://www.dmoz.org/Health/Specific_Substances/Tobacco/Effects/Cancer/Lung/ from your server. The reason might be a firewall, proxy, or http://dmoz.org/http://www.dmoz.org/Health/Specific_Substances/Tobacco/Effects/Cancer/Lung/ or your web hosting company might be blocking outside connections. Another possibility is a timeout because of slowdown in internet itself.