Known Problems: SVR4
     On some SVR4 systems, attempting to set the socket buffer  size  is
either  not  supported  or, even worse, might result in innd's data size
growing.  The most noticeable  symptom  is  "cant  setsockopt(SNDBUF)"
messages  in  your  syslog  output.  To fix this, either comment out the
calls to setsockopt in innd/nc.c or add  "-USO_SNDBUF"  to  your  DEFS
config parameter.

     I have heard that Sony SVR4 systems have  lots  of  problems.   You
must  set  HAVE_UNIX_DOMAIN to "DONT"; sockets in general seem to have
problems, including kernel crashes and a blocked innd.