Strange exception

I have seen this come from my java process isn't this a jigsaw thing?

java.net.SocketException: A system call received a parameter that is not valid.
        at java.net.PlainSocketImpl.setOption(Compiled Code)
        at java.net.Socket.setTcpNoDelay(Compiled Code)
        at org.w3c.jigsaw.http.httpd.run(Compiled Code)
        at java.lang.Thread.run(Compiled Code)

Received on Thursday, 4 November 1999 04:58:43 UTC