The first thing to determine is whether it's a problem with your site (its SSL certificate), or something's broken on your browser. Try some other browsers to see if they give the same error. If they do, it's likely a site problem. It's not saying something about "unsecure content" or anything like that -- you can't get into SSL content at all? Were you able to before? Did your certificate expire? It may be time to start talking to whoever installed and/or sold you the SSL certificate.