I'm not sure why it is doing it several times a second but SIGWINCH allows you to reload the sc_serv.conf while the DNAS is still running. Not all the variables will be reloaded (for instance MaxListener) but others such as Password, RelayServer, RelayPort, etc. (see README for a complete list) will be allowing you to change certain things on the fly. To do so use:
kill -WINCH pid
where pid is the process id of sc_serv
I know not much help but at least you know what it is.