Facebook has since confirmed the bug, and tried to do some damage control: http://www.zdnet.com/blog/facebook/facebook-cookie-tracking-issue-is-limited-fix-comi

Facebook has since confirmed the bug, and tried to do some damage control: http://www.zdnet.com/blog/facebook/facebook-cookie-tracking-issue-is-limited-fix-coming-today/4393 http://www.zdnet.com/blog/facebook/facebook-cookie-tracking-...