Updated SSL codes

[GaryT]

Does anyone know how/from where I can upgrade my SSL codes on FireFox
(v20) without having to completely reinstall it?

Most web sites apparently have new security codes and my SSL is now out
of date.  The following message comes up every time.  It's annoying to 
say the least.

*******************************************************************
Secure Connection Failed
An error occurred during a connection to www.xxxxxxxx.com.

Cannot communicate securely with peer:
	   no common encryption algorithm(s).

       (Error code: ssl_error_no_cypher_overlap)

The page you are trying to view cannot be shown because the
authenticity of the received data could not be verified.

Please contact the website owners to inform them of this problem.
Alternatively, use the command found in the help menu to report this
broken site.
********************************************************************

Much appreciated if someone can help.
GaryT