Yast unable to mount NFS share

I'm trying to set up Yast "Software Source Media", using an NFS share. I've exported the directory containing the contents of the SuSE 9.3 DVD, using the no_root_squash option. Both root and users can mount that share. However, when I try to set up Yast to access that share, I get an error message "Media:insufficient permissions". Any idea, as to the cause of the problem? tnx jk