SAMBA nobody errors

[Arthur J. D'Alessandro III]

Does anyone know why these errors are being reported?

[2000/10/02 09:07:23, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:23, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:23, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:23, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:24, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:26, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:26, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:27, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:27, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:27, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:37, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:37, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:37, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:37, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:38, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:38, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:38, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:47, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:48, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:48, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:48, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:48, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:49, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:54, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:55, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:56, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:56, 0] smbd/password.c:(826)
  rejected invalid user nobody
[2000/10/02 09:07:57, 0] smbd/password.c:(826)
  rejected invalid user nobody