samba - Nov 2003 - OpenOffice fails to open in read-only files under Windows

Hi,

we have just upgraded to SAMBA 3.0.0. Everything works fine, but 
unfortunately it is not possible to open read-only files with OpenOffice 
under Windows any more. Error Message from OpenOffice: "file does not 
exist."

Someone mentioned an error 5xx for the same Problem with Excel files. Is 
this related?

Strange thing is that nobody else has experienced the behaviour with 
OpenOffice. So I thought this might be my settings. So I used the 
default SAMBA 3 settings to see if this solves the problem, but no luck 
so far.

Is this a known problem? Has someone experienced the same? Any solutions?

Thanks for help.
Matthias