This happened to me as well - several identical copies of postings from a
few lists. The duplication occurs after LISTSERV processed the mail file,
ie I  assume someone  has been  reloading spool  tapes several  times, or
maybe an RSCS bug caused multiple  transmissions of the files, etc. There
is nothing you can do about it but pray, given that this occurs after the
file was exploded to the mailing list.
 
  Eric