The SSL certificate for SOTT will not officially work with "www.fr.sott.net", which is why you get the security error.
It will only work with BLAH.sott.net, i.e. www.sott.net, fr.sott.net, etc.
So, that error is actually saying, "The SSL certificate is for *.sott.net, but you're trying to go to *.*.sott.net"
In other words, a wildcard SSL certificate is only good for subdomains, not sub-subdomains.
So, just chop off the "www." and then it will work fine.
If you clicked a link from somewhere, it apparently added the "www." at the beginning, which is bad juju.