Here is an easy fix. Type “About:Config” without quotes into your browser header and Filter “Referer” without quotes. Now, change the boolean value to 0.
Another security fix is to goto Tools, Options, Privacy, Settings, and remove everything except Browsing History and Saved Passwords. I like to keep both these as it will retain the webpages so I can see my history and I only save passwords for stupid things I rarely use. When you click OK check, the “Always Clear My Private Data Before Closing Firefox”. As a side note deleting cache only wipes it from being visible from the OS and is recoverable. If you want to overwrite you need a program like Eraser and have it do several passes.
Tags: computer privacy, firefox security, privacy settings, referrer