Bad signature on 0.9.2 diff

[dch]

The 0.9.2 diff doesn't seem to verify:

  [4] ls -l gnupg-0.9.2.diff.gz 
  -rw-r--r--   1 dch      user       206449 Jan 22 23:43 gnupg-0.9.2.diff.gz
  [5] zcat gnupg-0.9.2.diff.gz | gpg --verify
  gpg (GnuPG) 0.9.1; Copyright (C) 1999 Free Software Foundation, Inc.
  This program comes with ABSOLUTELY NO WARRANTY.
  This is free software, and you are welcome to redistribute it
  under certain conditions. See the file COPYING for details.

  gpg: Warning: using insecure memory!
  gpg: Signature made Wed Jan 20 21:49:39 1999 GMT using DSA key ID 57548DCD
  gpg: BAD signature from "Werner Koch (gnupg sig) <dd9jn at gnu.org>"

Does anyone know why? Does this work ok for others?

gpg seems to verify the original archive gnupg-0.9.1.tar.gz ok.