Comment 36 for bug 274421

@amrita,

This implies that the script tries to use the proxy address http://:8080/ to download the fonts, which is obviously an erroneous value.

If you're not using a proxy, you can set the proxy address to blank. Open a terminal and run:
$ echo "set msttcorefonts/http_proxy " | sudo debconf-communicate

If you're using a proxy to access the net then run the following command (change PROXY with your proxy address, for exemple http://192.168.0.1:3128/) :
$ echo "set msttcorefonts/http_proxy PROXY" | sudo debconf-communicate

Enter your password when you're asked for it.
You can check if the value is correctly set with the debconf-show command

Hope this helps.