Optimize Firefox startup times

I did some research on my prolonged firefox startup time and alas I found something cool:

Vacuum your Firefox databases

Basically you have to do the following:

• Install sqlite3:

  sudo apt-get install sqlite3

• Vacuum your Firefox DBs:

  find ~/.mozilla/firefox -name "*.sqlite" -exec sqlite3 \{\} VACUUM \;

• Reindex your Firefox DBs:

  find ~/.mozilla/firefox -name "*.sqlite" -exec sqlite3 \{\} REINDEX \;