--2013-09-30 05:08:54--  http://ftp.gnome.org/pub/GNOME/sources/libsigc++/2.2/libsigc++-2.3.1.tar.xz
Resolving ftp.gnome.org... 130.239.18.163, 130.239.18.138, 130.239.18.173, ...
Connecting to ftp.gnome.org|130.239.18.163|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2013-09-30 05:08:55 ERROR 404: Not Found.