These are the steps to install OpenOffice 3.1 on Ubuntu. First of all download OpenOffice 3.1 from the official web site. When you’re done, follow these steps:

1. Remove previous version

sudo apt-get remove openoffice*.*

2. Remove settings folder This will remove ALL your OpenOffice settings

rm ~/.openoffice.org -rf

3. Expand the archive

tar -xvzf OOo_3.1.0_LinuxIntel_install_en-US_deb.tar.gz

4. Setup

cd OOO310_m11_native_packed-4_en-US.9399/DEBS/

sudo dpkg -i *.deb

5. Setup desktop integration

cd desktop-integration

sudo dpkg -i openoffice.org3.1-debian-menus_3.1-9393_all.deb