Upgrade Open Office 2.4 to 3.0 (for Ubuntu)

To the point OK!

Uninstall Open Office 2.4 with command:
$ sudo apt-get remove openoffice.org-core

Download OpenOffice 3.0 at Web Official download OpenOffice.org

http://download.openoffice.org/other.html
or
http://kambing.ui.edu/openoffice/stable/3.0.0/
an then for Ubuntu user, choose  DEB package