how to upgrade libre office?

I would like to have the latest version of libreoffice on ubuntu

Use the ppa from https://launchpad.net/~libreoffice/+archive/ppa but be aware of the caveats mentioned on that site. In spite of those warnings, I have LO v4.02 on a test OS of Lubuntu on an old laptop and it seems to work faultlessly.

i guess you must add a PPA and then:

sudo apt-get update

add probably, you will see the update in "update manager" take this: https://launchpad.net/~libreoffice/+archive/libreoffice-4-0

ajgreeny said: Use the ppa from https://launchpad.net/~libreoffice/+archive/ppa but be aware of the caveats mentioned on that site. In spite of those warnings, I have LO v4.02 on a test OS of Lubuntu on an old laptop and it seems to work faultlessly.

I concur in the faultless operation of LibreOffice 4.0.2.

I'm running it on my Thinkpad T420 laptop under LinuxMint Nadia (based on Ubuntu 12.10) and on my HP d4999t desktop under LinuxMint Maya (based on Ubuntu 12.04). On both systems I find LO 4.02 fast and easy to use.

The update to libreoffice is optional though, as its not really a security update or anything.

rewyllys said: In spite of those warnings, I have LO v4.02 on a test OS of Lubuntu on an old laptop and it seems to work faultlessly.I concur in the faultless operation of LibreOffice 4.0.2.

Right, but that can be subject to change at any time, literally. The *main* PPA is marked as:

LibreOffice test builds and backports

.. and is updated constantly; for anyone looking to use the new LibreOffice, that ppa:libreoffice/libreoffice-4-0 PPA should be used, as suggested..:)