Plugger, Privacy settings for Mozilla Firefox
To remove history or not even allow history to function.
Select Tools -> Options.
Click on Privacy tab and then click on Settings near bottom right corner.
You'll see several boxes with check mark.
Browsing History
Saved Form Informatin
Saved Passwords
Download History
Cookies
Cache
Authenticated Sessions
Under settings
Clear private data when closing Firefox
Ask me before clearing private data
Check all the data you want cleared like history, Cache but also check, "Clear private data when closing Firefox" so every time you close the browser it clears all the data. Now click the "Okay" button.