HTTPS-Everywhere breaks reCAPTCHA on bb.arethusa.su
If you try to post something on https://bb.arethusa.su/post.php?fid=5 you won't get the reCAPTCHA image to solve. If you click on the reload button within the reCAPTCHA frame you'll get an "Input error: Invalid referer" error. The problem is this: Google does not like the Referer to get sent along with the request. Usually that does not happen as the reCAPTCHA is using http:// but the forums site https://. Now, as HTTPS Everyhwere is rewriting the http:// requests the Referer is sent, Google is complaining and reCAPTCHA broken.
I tested that with a clean profile and the latest stable version of HTTPS-E and with the latest TBB and with JonDoFox. Disabling HTTPS-E (in the Add-Ons menu) and restarting the browser "solved" the issue.