samba - Dec 2001 - Exact meaning of "numopen" on open/close log mesages ?

Hello,

does anybody here know the exact meaning of "numopen" in the
open/close
file log messages?

Does it mean the number of open sessions on the file:
- at all?
- per user?
- per client?

Sometimes numopen is greater than zero ofter the last user has closed
as file. Is this an error?


Here an extract of <hostname>.log
---------------------------------
[2001/10/31 08:57:24, 2] smbd/open.c:open_file(602)
  igleich opened file Einkauf Walzbarren/Einkauf MG NE.xls read=Yes write=Yes
(numopen=2)
[2001/10/31 09:09:38, 2] smbd/close.c:close_normal_file(159)
  Igleich closed file Einkauf Walzbarren/Einkauf MG NE.xls (numopen=1) 
[2001/10/31 09:09:38, 2] smbd/open.c:open_file(602)
  igleich opened file Einkauf Walzbarren/Einkauf MG NE.xls read=No write=Yes
(numopen=2)
[2001/10/31 09:09:38, 2] smbd/close.c:close_normal_file(159)
  Igleich closed file Einkauf Walzbarren/Einkauf MG NE.xls (numopen=1) 
  
This was the last close on the file, nobody has it open and numopen is
still 1.


Any hints?
Thanks,
Bernd