SSL is enabled in FF by default. If you want to check your settings, use this page and look for your browser.
http://www.techsupportalert.com/content ... ncerns.htm
I started a thread here
https://vivaldi.net/forum/private-brows ... sl-helpers so hopefully more useful tips and tools get added there.
The warning about mixed modes is common and a bit unavoidable.
A browser can warn you about the fact that some of the content it sees in an HTTPS page has been linked with normal HTTP.
eg. most peoples sigs and links they post.
If everyone posts HTTPS links, it will stop complaining.
We all have to get used to it anyway, as we no longer have much choice.
You should actually now start seeing browsers complaining more often, as you will notice incorrectly configured sites that previously seemed fine.
So far you have been trusting all those links and pics, so you can decide to show all content here.
Be warned, this is how you punch an easy hole in an SSL site, but we don't allow html in posts or sigs.
The HTTPS everywhere plugin tries to fix problems like this, and other incompatibilities.
https://www.eff.org/https-everywhere (sorry no IE plugin)
(Ask for this to be installed in your work browsers)
I also use "LinkRedirector" to fetch HTTPS and bypass the extra tracking hops in google
http://far.whochan.com/wlog.cgi/LinkRedirector (sorry no IE)
I can see Internet Explorer becoming an even weaker point than before. Without the extra muscle of some plugins it is rather defenceless.