Almost all the major Linux distributions are using LibreOffice instead of OpenOffice. Today, it has been announced that Debian Squeeze too will get LibreOffice in the backports.LibreOffice has been available in Debian Wheezy and Debian Sid for a while now. But in the stable release, Debian Squeeze, it is not available.
How To Get LTS updates for Debian 6 (Squeeze)
Debian Squeeze (6.0) is the so named "Old Stable" branch of Debian, the official support for this version ended in april 2014. Squeze is still used on many servers, so a group of Debian developers decided to provide security patches for a longer timespan for this release.
The Debian release team are sounding the alarm: With only one month left before the planned release freeze, the number of critical bugs in Debian 6.0 Squeeze is still far too high to freeze development and create the next stable version of Debian.
The Debian project announced the immediate availability for download of the tenth maintenance release of the Debian 6 Linux operating system.This tenth point update is actually a very important one because it’s the last one in the life of this branch of the Debian distribution, which was released back in February 2011.