The SSL protocol had been disabled.

My big hello to all,
I am posting an error message here that I meet when I am using SEAMONKEY, this error message is about the SSL protocol had been disabled, every time I run SEAMONKEY, this error message always pop's up my screen, please below the context of the error.
Alert
Firefox can’t connect securely to www.securesite.com because
the SSL protocol had been disabled.
For the past days I have not experience this error message, I remember someone used my computer, but I have not ask him if he did some changes on my settings, my problem here is, I don't know how to turn on the SSL protocol,
Please teach me how to do it,
Thanks in advance.
