Firefox

Install latest Firefox build from Mozilla.org

The following are the instructions to install latest Firefox build from Mozilla.

Download the package from Mozilla site
Untar it (Right-click on the file -> Extract -> Extract here).
Move the folder created to /opt/ folder (use File Manager - Super User Mode)
Remove /opt/firefox/plugins folder and create a symlink to /usr/lib/firefox/plugins. If still in File Manager - Super User Mode, press F4, otherwise open konsole, log in as root and type:

ln -s /usr/lib/firefox/plugins /opt/firefox/plugins

To set up the computer to launch the newly installed browser you have two choices:

ln -sf /opt/firefox/firefox /usr/bin/firefox

(potential issue, that link gets overwritten if you upgrade through Synaptic the Firefox version that comes pre-installed in MEPIS)

or, you can modify or create a link on the desktop to /opt/firefox/firefox, you can also modify or add a similar link in KMenu. In addition you need to set up the default browser to open the same /opt/firefox/firefox program.

If any of these steps sounds too complicated don't hesitate to ask on mepislovers.org for more clarifications.