Tonight's update included a test version of SSL user accounts. When logging in it should automatically redirect you to the SSL version of the site. You can tell if it worked by looking for the "https" bit at the front of the URL in the address bar instead of the usual "http", like so: [photo:64788]
Since this is still in testing I haven't disabled the non-secure version just yet so, in case things don't work quite right, you can still get into your account by removing the "s" from "https" in the URL: [photo:45962]
If you do run into any issues please open a ticket in support as well so the problem can be fixed.
As always, I'd like to personally thank everyone for being a part of Sigma. You guys rock!