Private Browsing allows you to surf the web without recording a history of the sites visited and without saving any information about the session. If Firefox is to be installed on a public computer, then starting it in Private Browsing mode is a must.
1. Open Firefox 3.1.
2. In the Location Bar, input about:config.
3. Click to get past the warning message that appears.
4. Locate the Preference Name browser.privatebrowsing.autostart.
5. Double-click the preference and change the value to true.
The next time you open Firefox, it will be in Private Browsing mode.
