changing install dir from cd to ftp fails

shalom, i am getting with yast/you or by manually making mount -o ro ftp.suse.com:/pub/suse/current ...the message: "Impossible to access teh source media. mount: RPC: Portmapper failure - RPC: cannot recieve" The inetd is ON and with a browser or an ftp program i can access ftp directorys well. What am i doing wrong? cu andi