cd ~/ && wget -c -r -nd -l1 --no-parent -A_Linux_x86_deb.tar.gz
========= SCRAPER REMOVED AN EMBEDDED LINK HERE ===========
url was:"http://download.documentfoundation.org/libreoffice/stable/4.1.2/deb/x86/"
linktext was:"http://download.documentfoundation.org/ ... 2/deb/x86/"
====================================
&& wget -c -r -nd -l1 --no-parent -A_Linux_x86_deb_langpack_it.tar.gz
========= SCRAPER REMOVED AN EMBEDDED LINK HERE ===========
url was:"http://download.documentfoundation.org/libreoffice/stable/4.1.2/deb/x86/"
linktext was:"http://download.documentfoundation.org/ ... 2/deb/x86/"
====================================
&& tar -xzvf *x86_deb.tar.gz && cd *x86_deb/DEBS && sudo dpkg -i *.deb && cd ~/ && tar -xzvf *x86_deb_langpack_it.tar.gz && cd *x86_deb_langpack_it/DEBS && sudo dpkg -i *.deb && cd && rm -r LibreOffice_*.* && exit

copy/paste in terminal for update libreoffice?

I would first try enabling the Debian sid repo and see if libreoffice upgrades that way without error via apt-get.
Then disable the sid repo again.