[Samba] can't update msaccess mdb file

[Chris]

At an account running 3.0.14a Debian (same account as the dual log file 
issue posted earlier). A user sporadically cannot update an Access mdb 
file and gets access denied errors.

The log:

[2005/09/08 12:14:31, 2] smbd/open.c:open_file(245)
  ginny opened file database/EACM & ECC Reports Secure.ldb read=Yes 
write=Yes (numopen=4)
[2005/09/08 12:14:36, 2] smbd/open.c:open_file(245)
  ginny opened file database/EACM & ECC Reports Secure.mdb read=Yes 
write=No (numopen=5)
[2005/09/08 12:14:36, 2] smbd/close.c:close_normal_file(272)
  ginny closed file database/EACM & ECC Reports Secure.mdb (numopen=4)
[2005/09/08 12:21:13, 2] smbd/service.c:make_connection_snum(314)
  guest user (from session setup) not permitted to access this share 
(EACM)
[2005/09/08 12:21:13, 2] smbd/service.c:make_connection_snum(314)
  guest user (from session setup) not permitted to access this share 
(EACM)
[2005/09/08 12:21:13, 2] smbd/service.c:make_connection_snum(314)
  guest user (from session setup) not permitted to access this share 
(EACM)
[2005/09/08 12:21:13, 2] smbd/service.c:make_connection_snum(314)
  guest user (from session setup) not permitted to access this share 
(EACM)
[2005/09/08 12:21:13, 2] smbd/service.c:make_connection_snum(314)
  guest user (from session setup) not permitted to access this share 
(EACM)
[2005/09/08 12:21:13, 2] smbd/service.c:make_connection_snum(314)
  guest user (from session setup) not permitted to access this share 
(EACM)
[2005/09/08 12:21:13, 2] smbd/service.c:make_connection_snum(314)
  guest user (from session setup) not permitted to access this share 
(EACM)
[2005/09/08 12:21:13, 2] smbd/service.c:make_connection_snum(314)
  guest user (from session setup) not permitted to access this share 
(EACM)
[2005/09/08 12:21:13, 2] smbd/service.c:make_connection_snum(314)
  guest user (from session setup) not permitted to access this share 
(EACM)
[2005/09/08 12:21:13, 2] smbd/service.c:make_connection_snum(314)
  guest user (from session setup) not permitted to access this share 
(EACM)

Oplocks are off.
smbstatus shows:

  PID     Username      Group         Machine
-------------------------------------------------------------------
 8896   ginny         users         backoffice   (192.168.1.212)

Service      pid     machine       Connected at
-------------------------------------------------------
EACM          8896   backoffice    Thu Sep  8 12:13:52 2005

Locked files:
Pid    DenyMode   Access      R/W        Oplock           Name
--------------------------------------------------------------
8896   DENY_NONE  0x2019f     RDWR       
NONE             /home/samba/eacm/database/Secured.ldb   Thu Sep  8 
12:14:31 2005
8896   DENY_NONE  0x2019f     RDWR       
NONE             /home/samba/eacm/database/EACM & ECC Reports 
Secure.ldb   Thu Sep  8 12:14:31 2005
8896   DENY_NONE  0x2019f     RDWR       
NONE             /home/samba/eacm/database/EACM & ECC Reports 
Secure.mdb   Thu Sep  8 12:14:31 2005
8896   DENY_NONE  0x2019f     RDWR       
NONE             /home/samba/eacm/database/Secured.mdw   Thu Sep  8 
12:14:31 2005

Any ideas?

Thanks.

Chris