Not able to create connections to http://dmoz.org/http:/www.dmoz.org/World/Deutsch/Kultur/Darstellende_Kunst/ from your server. The reason might be a firewall, proxy, or http://dmoz.org/http:/www.dmoz.org/World/Deutsch/Kultur/Darstellende_Kunst/ or your web hosting company might be blocking outside connections. Another possibility is a timeout because of slowdown in internet itself.