Firefox didn't crash with my amd64 pc, but Sun's Java demo applet only worked after following Mathew Koyle's:
sudo apt-get build-dep icedtea-java7-plugin
sudo apt-get -b source icedtea-java7-plugin icedtea-java7-bin icedtea-java7-jre icedtea-java7-jdk
sudo dpkg -i icedtea-java7-*deb
Firefox didn't crash with my amd64 pc, but Sun's Java demo applet only worked after following Mathew Koyle's: java7-plugin java7-plugin icedtea-java7-bin icedtea-java7-jre icedtea-java7-jdk
sudo apt-get build-dep icedtea-
sudo apt-get -b source icedtea-
sudo dpkg -i icedtea-java7-*deb
This also helped fix my Azureus crash problem.