I am trying at OpenOffice 3 rc4 right now and asked a friend to send me a .docx file in order to check if it worked.
The file is 15.9kb and only appear a big ink splash. I searched on internet to see if someone could make it work on any linux distro and looks like they haven't.
I suggest to create a special package for read and write .docx, .xlsx and .pptx files since the OO3 fails on that.
And don't start with "IS YOUR FAULT" dance since I download and install the packages and they didn't worked.
If you don't believe me then here is http://rapidshare.com/files/153511617/diagramas_4.docx.html
the file, just 15.9kb of epic fail.