have you tried this?
# wget -q -O -
http://go.ximian.com |sh
or if behind proxy ...
env http_proxy=http://host
ort/ wget -q -O -
http://go.ximian.com |sh
where "host" is your proxy host and "port" is your proxy port number.
while ver 9 is not on ximian's officially supported distro list, this should work.