[Samba] Excel "file may have been modified by another user since" with Samba 3.0.10

[David Landgren]

Hello list,

I am encountering a problem with Excel 2003 on Samba shares. If I open
an Excel file, edit a cell and then try to save it, I get a dialog box
with a "file may have been modified by another user since" message,
with the option to save a new copy, or overwrite the current file.
Subsequent saves don't exhibit this behaviour, it occurs only on the
first save after opening a file.

This was using Samba 3.0.2. I went through the Changelogs and saw the
line in the 3.0.5 changes (Implement deferred open code to fix a bug
with Excel files on Samba shares.) and thought that this would do the
trick.

I have built and rolled out 3.0.10, but the problem is still present.
The only file that smbstatus shows is as follows:

Pid    DenyMode   Access      R/W        Oplock           Name
--------------------------------------------------------------
15586  DENY_NONE  0x2019f     RDWR       EXCLUSIVE+BATCH 
/home/d/david/a.xls   Tue Jan 11 15:02:14 2005

I have tried the 'defer sharing violations' set to yes, set to no, but
that doesn't change anything. I assume I have to change something in
smb.conf but I don't know what it is.

Thanks for any clues I can use,
David