Cookies and cache are temporary internet files that are stored on your computer to keep track of sites you’ve visited. Cookies and cache are meant to allow faster access to data and store site preferences. These files usually have an expiration date, so they clear on their own but you always have the option of clearing them manually. Follow the steps below to clear your cookies, cache and history in Firefox 3.0.
To clear cookies, cache and history in Firefox 3.0:
1. Open Mozilla Firefox.
2. Click the Tools menu, and then click Clear Private Data….
3. Check the Browsing History, Cache and Cookies, and then click Clear Private Data Now.
Poof! Your cookies, cache and history have disappeared in Firefox 3.0.