You can participate in setting the world record by downloading Firefox today.

To manually install firefox in ubuntu follow these steps:

Preparing your system

sudo apt-get install libstdc++5

First you need to take backup of your old firefox preferences

sudo cp -R ~/.mozilla ~/.mozillabackup

Now you need to download firefox 3.0 from here

Now you have firefox-3.0.tar.bz2 file

Unzip the .tar.bz2 file in /opt directory using the following command

sudo tar -C /opt -jxvf firefox-3.0.tar.bz2

Now you need to link the plugins using the following command

cd /opt/firefox/plugins/

sudo ln -s /usr/lib/mozilla-firefox/plugins/* .

Now you need to create a link to your new firefox launcher using the following command

sudo dpkg-divert --divert /usr/bin/firefox.ubuntu --rename /usr/bin/firefox

sudo ln -s /opt/firefox/firefox /usr/bin/firefox

sudo dpkg-divert --divert /usr/bin/mozilla-firefox.ubuntu --rename /usr/bin/mozilla-firefox

sudo ln -s /opt/firefox/firefox /usr/bin/mozilla-firefox

This will complete the installation of firefox 3.0

If you want to open firefox 3 go to Applications—>Internet—>Firefox Web Browser