Whats wrong with my facebook account?

Maybe you clicked on one of those virus things that people sometimes post on their friends' walls,once clicked on that person sets off the virus chain all over again ,and sends to more people on their list. I would advise you to NEVER click on any suspiscious looking links (for example the supposed activation of the Facebook "Dislike" button) . In the meantime,bring your computer to a trusted repair outlet,and have a reputable anti-virus program installed on your computer,and also have this virus removed from your computer. Good Luck!