executing an /etc/rc.d/init.d/nfs reload calls /usr/sbin/exportfs. this is fine, but the default behavior for exportfs is just to print the current setup, not to reload. to do this, just change the line to be /usr/sbin/exportfs -r which syncs the running daemons with the /etc/exports file. man exportfs for more info
This is already fixed in knfsd-1.4.7-1.