Let's try an experiment. I have put a copy of that file on the
ODFAuthors website, here:
http://www.odfauthors.org/libreoffice/english/impress-guide/draft-lo3.4
(BTW, I have no idea when I got that copy of the file and whether it
was downloaded from Alfresco or not. My copy is probably the one that
was published back in July.)
You should be able to download it without having an account on that
website, but let me know if that doesn't work. (Most drafts are set
to be invisible to people without accounts, but I "published" this one
to make it accessible.)
You will not be able to upload any files without having an account.
Let me know if you want me to create an account for you.
Another experiment: download the file from the LO wiki and see if that
copy misbehaves as well.
The results of these experiments will not prove anything, but they
might give us some further clues as to what's going on. If several
people try these, that will give us more data points.
--Jean