[Zope] MSword-webdav question

[Zanotti Michele]

Hi all
I have Zope 2.5 (started with option: W -9800) on win2k and Office XP. I can
open/read/modify MSWord documents via WebFolder, but if I
open-modify-save-close a document, and then I reopen it, it appears
read-only and only after some time I can reopen and modify it. Can anyone
help me to understand what happens after I modify a document the first time
and why it remains locked for some time and what unlock it?
Michele