Captcha is broken for signup

Captcha is broken for signup.

See comment from customer:

Just signed up. I use Chrome, and I was unable to sign up because the "Captcha" thing kept saying the text I entered did not match the image. I tried (no kidding) about 30 times. I tried here, I tried over at the regular Confluence part, and I even tried signing up in German and French! Always the same problem.

Then I got the idea to try it in a different browser. So I popped open IE 9 and boom, it worked on the first attempt.

Clearly your Captcha system is broken in Chrome. I don't know where to report this so I'll just write it up here. For the sake of other Chrome users, please fix it!

https://wikitechcomm.onconfluence.com/pages/viewpage.action?pageId=3441714