To install firefox 8 on Debian, download from mozilla web page. Then:
#su
enter your password then:
# apt-get remove iceweasel
Go to directory of the download firefox file and then
# mv firefox-8.0.0.tar.bz2 /usr/lib/; cd /usr/lib/; tar -jxvf firefox-8.0.0.tar.bz2; ln -s /usr/lib/firefox/firefox /usr/bin/firefox
change the name according to the version downloaded
#rm -rf /usr/lib/firefox/plugins; ln -s /usr/lib/mozilla/plugins /usr/lib/firefox/plugins
to create a icon:
Second mouse click on "Applications" under the internet menu add item.
command: /usr/lib/firefox/firefox
to run firefox as root to install updates:
#chown
Enjoy ;)