static GnomeVFSResult
  rpc_init_tcp(NfsServerConnection *c)
  {
  	/* create TCP clients */
  	if ((c->mount_client = clnttcp_create(c->mount_server_addr,
  	
			MOUNTPROG, MOUNTVERS,
  	
			&c->mount_sock, 0, 0)) == NULL) {
  		clnt_pcreateerror("clnttcp_create");
  		return GNOME_VFS_ERROR_SERVICE_NOT_AVAILABLE;
  	}
  	if ((c->mount_client = clnttcp_create(c->nfs_server_addr,
  	
			NFS_PROGRAM, NFS_VERSION,
  	
			&c->nfs_sock, 0, 0)) == NULL) {
  		clnt_pcreateerror("clnttcp_create");
  		return GNOME_VFS_ERROR_SERVICE_NOT_AVAILABLE;
  	}
  	return GNOME_VFS_OK;
  }

The second assignment is obviously wrong: you should be assigning to
->nfs_client, not mount_client.

Cheers,
-- 
Martin