Problems: Firefox crash? Reinstall and try again!

Yesterday I got an error while I was running Mozilla Firefox:

Segmentation fault (core dumped)

OMG OMG! "Stay calm, don't freak out... Hmm what can I do?" I said to myself. While I was listening to Rod Stewart - What A Wonderful World (featuring Stevie Wonder) it occured to me: I could reinstall the program, just to see if something is wrong with the installation, i.e. a file might have been removed by mistake, who knows! Reinstalling of a package is a command featured in all debian-based operating systems (Ubuntu Linux here). All you have to do is open the Terminal (in GNOME Desktop Manager) and type this:

sudo apt-get install --reinstall firefox

Then type your password and sit back in your chair, watch the fancy thing reinstall itself. Then type:

killall -9 firefox-bin

...just to be sure firefox isn't open anymore. Then start Firefox from the applications menu. Good browsing everyone!