Although this can be very convenient, it can also become an obvious privacy issue. Those stored information can be easily discovered by anyone who has access to your computer.

In order to protect your privacy, you need to erase or clear your browsing history.

How to erase browsing history using Firefox 3:

1. Click Tools then Select Clear Private Data… or Press Ctrl+Shift+Del to open the Clear Private Data window in Firefox. Select everything and click OK. If you want, you may restart Firefox.
2. Everything should be cleared from Firefox in Step 1. But if you click the drop-down in the Firefox address bar, you will able to see a long list of websites there. Wonder why they are not deleted?
3. From the bookmark’s toolbar, click either the “Smart Bookmarks” or the “Places” folder and you will find another list that exposes your browsing habits.

Firefox 3 should fix this bug in the future. Clearing your complete web browsing history in Firefox 3 can be really tough.

How to erase browser history using Firefox 2:

1. Click on “Tools”, and then click “Options”.
2. Select “Privacy”.
3. In Private area click “Clear Now”.
4. In “Clear Private Data” window put a check mark for “Browsing History”
5. Click “Clear Private Data Now”, and then click OK.

Now your browsing history has been cleared by now.