I've stopped using Google Chrome. I thinkit was corrupted by a glitch, or someone. Yesterday I logged on in the morning to Facebook. No problem. That afternoon, when I logged back on, EVERYthing had changed. Nothing looked the same. And I couldn't log out. So tonight I got the idea to log in using MSN Bing. Facebook was back to it's usual format. Maybe some Techie could explain this. I've jettisoned Google Chrome as I suspect the problem lay with it for whatever reason.
Weird. And a little scary too.
Now I'm re-logging into all my favorite web places using Bing and manually entering my passwords/usernames. Bit of work, but I feel safer.