Here is a great article, telling the truth about Social Security, and what to expect, and to ease your fears, whether retired, or close to it, plus what those in the 50-55 year range can expect.
http://finance.yahoo.com/focus-retirement/article/112773/social-security-medicare-meltdowns-moneywatch?mod=fidelity-readytoretire&cat=fidelity_2010_getting_ready_to_retire