How to install Firefox 3.1 Beta 2
cp -r ~/.mozilla/firefox/ ~/firefox_profile_backup
wget -O - http://releases.mozilla.org/pub/mozilla.org/firefox/releases/3.1b2/linux-i686/de/firefox-3.1b2.tar.bz2 | tar xj -C ~
~/firefox/firefox
To get your plugins from Firefox 3.0.x (such as Flash and Java) to work, copy them from “/usr/lib/firefox/plugins” to “~/firefox/plugins”.
