I *think* (I said "think") I have  found the culprit. The CMUCCVMA server was
running  SP4 with  Rel.3 of  CARD MODULE  and a  clobbered A-disk,  which might
account for the swapping of two blocks  of 400 bytes (although 400 bytes is not
a  remarkable number  for CMS-format  disks --  unless the  disk was  formatted
blksize 800, in which case it's a  half-track (see QQTRK &co) and it's a *very*
reasonable  explanation).  Marc  had  to   reformat  his  server's  A-disk  and
re-install LISTSERV  from scratch,  so PLEASE  check your  own version  of CARD
MODULE if you're running SP4 and you've not  done it yet. Note that it will not
start damaging  your disk until a  certain number of files  have accumulated on
it  (there is  no  hash table  if  the  disk does  not  contain enough  files).
 
  I will  ship version 1.5h  out as soon as  Marc has re-installed  his server.
Please note  that LISTSERV update shipments  are NOT cumulative like  IBM's PUT
(Probably  Unexpected Troubles  ;-) )  tapes,  so be  careful not  to skip  any
update shipment.  Do not  install 1.5h  unless you are  already at  1.5g level!
 
  Some of you  may not have received  the 1.5g files or may  have received them
damaged (I  asked those  postmasters who  received damaged  copies to  kill the
files sent  out by  their servers  when the destination  link was  still down).
In that case please contact Harold and he'll send you a copy.
 
  Marc: you'll have to  install UPD15H too since I altered  two files since the
shipment I sent you (cosmetic changes but  I prefer to have all servers bearing
the same release number with the exact same status).
 
  Eric