have anyone noticed it? abi is only my browser? almost all the secure sites i visit are no longer secure or did all their certificate expire at the same time?

This has happened to me a few times with facebook: At work, there is a firewall so I have to access it using https. Then when I get home and pull it up, I usually go with what my address bar has saved....the https, though now I am at home. I then get that "error".

What works for me: Clearing cache.

Good luck!