If you need HTTPS to protect your privacy on all pages of Ask Ubuntu, install the HTTPS Everywhere browser extension and it will modify all requests by replacing
This is a weakness of Stack Exchange and should be corrected. They might need to invest money on better hardware and in software engineering to support the huge number of TLS 1.2 connections, otherwise some visitors may experience timeout or certificate errors.
HTTPS Everywhere has a special rule for Ask Ubuntu and you will not have connection problems.
Your browser will show a green lock, click on it to see: 128 bit TLS 1.2 encryption from
If you use Mozilla Firefox (or Iceweasel) and the privacy is a huge priority of your LAN, visit
about:config from your address bar and search for the option
security.tls.version.min. Insert a higher number to prevent some HTTPS degradation attacks.