Grapefruit enzymes reduce the amount of insulin that the body makes which helps the metabolism stay regulated. A well-regulated metabolism helps you to lose weight faster and more effectively. Scientists do acknowledge that grapefruit has properties that balance out blood sugar levels and help the metabolism.
It's possible your Facebook woes are coming from some sort of malware, be it a keylogger, a trojan, or some other type of virus. Even if you think your computer is clean, it can't hurt to check.
And please tell me if something is on your wall that is supposed to have come from me. Follow @NakedSecurity. 14 November 2011 update: Since this article was first published it has become apparent that many Facebook users in recent days have been bombarded with hardcore porn and images of violence and animal abuse.