I think you hit the nail on the head. Since I do not have the other text fields validated, they do not have an initial value. The text field for the CAPTCHA has a value="" just like the sample Users Registration page.
Here is my CAPTCHA text field.
<input name="Security_code" type="text" class="WAATKTextField" id="Security_code" onBlur="if (document.getElementById('Security_codeServerValidation')) document.getElementById('Security_codeServerValidation').style.display='none'" value="" size="32" />
So my other text fields have no initial value.
They are just <input name="list_name" type="text" id="list_name" size="32" />
Is that my problem? I will begin validating them now just in case that is the problem. I just didn't think about it because I was so focused on where my typos must be.