You might wish to edit the necessary options in config.ini to disable the Hijack web- and ftp-related features. I don't know if they will prevent the buffer overflow crash or not, but it might be a start.

I would also seriously check into what else is plugged into the same network as your empeg. Whatever else is plugged into that network is getting hit with the same virus attacks, and may be susceptible to infection and/or compromise. In fact, one of your computers might be the very source of the infection.