Hi Version 4.0.0beta3-GIT-17ad62b If I have a libreoffice document open on a NFS Linux client and attempt to open the same using libreoffice or word 2003 in windows, file locking works. Word 2010 however, allows me to open and edit simultaneously. Locking fails. I can get around this by mounting the NFS share with cifs or using office 2003. Then locking works with all combinations. Not exactly what we want but OK. How can I get this to work with Word 2010? Cheers, Steve