How to disable annoying on-screen security warning messages in Firefox

You go into your email log in page or Facebook login page then suddenly Firefox displays warning security message that says you will be forwarded to encrypted page, when you logged out the same message appears again this time telling you that you will be forwarded to unsecure page. How to ge rid of all this? You can get rid of annoying security message in Firefox 3.6 by going to the Security Warning settings (Tools - Options - Security - Warning Messages - Security Warning). Do not select any of the on-screen security warning messages when the setting window appears, if any, please untick them then click OK to save the setting you have made. No need to restart Firefox, the change effect will take over immediately.