samba - Apr 2006 - Date from a file changes overwriting it

Hi everybody,

I've found an extrange behavior with Samba 3.0.10 (RHEL4). If I manually
copy a file from a XP-machine to the Samba Server, the date from the file is
maintained. But when the file already exists in the Samba Server and I
overwrite it, the date from the file changes to the present date in the
server.

Is there any way to avoid this behavior?

Thanks in advance
(please excuse my poor English)