Been on a FB blog all afternoon with my high school classmates. Seems to be working as good as it usually does. I don’t see any indication that it is “down” or knocking people off the site. Maybe you made the FB gods mad? :-)
Did you get an email from “Facebook” and click on the link? If so, you probably are the one that got hacked. It happened to my mom several months ago and I had to install an anti-virus program and it found some problems. I recommend AVG free as a starting point, works for most common viruses and other internet problems. Just do a Google search on “AVG Free” and do the download, then scan your computer.