How to Clear Your Cache on Firefox
Steps to clear the cache on Firefox and delete unnecessary temporary files from your computer. In your Firefox browser go to TOOLS. Click on OPTIONS. Then go to PRIVACY tab. Click on PRIVATE DATA section and click on SETTINGS. Now you can clear the following items: browsing history, download history, saved form information, cache, cookies, saved passwords, authenticated sessions. Check what you'd like to remove, specially the cache option. Mow click on OK button. click on CLEAR NOW and click OK to complete the task.
For help on other platforms and browsers, see "How to Clear Your Cache on Any Web Browser" for details.