How do I install the new version of LibreOffice (3.3.1) in Ubuntu 10.04? I have installed the PPA for LibreOffice but no updates show up.
Assuming you are using this one, 3.3.1 is currently building for Maverick (10.10). I assume lucid is still to follow.
If you really can't wait, then you can always go and build it yourself by grabbing the source code.
Libreoffice also provides DEB packages (see downdload page). These are usually built at release time and work fine with Ubuntu.
Then to install you (see official instructions for more details)
That's how you always get the latest release. Though, you manually have to deinstall/install at every version.