>For some reason I have some PC's that can't connect to some websites. (using IE or Chrome)
>
>I see this..
>
>A secure connection cannot be established because this site uses an unsupported protocol.
>Error code: ERR_SSL_VERSION_OR_CIPHER_MISMATCH
>
>Anyone know what could be causing that???

Al's provided the answer. But FWIW last time I looked:

IE has an option to accept SSLv3
Chrome can use it if started with a command line switch.
Firefox is about to remove support.

IAC probably not a good idea to allow it...