Hey,
Which version of Add user Frontend are you using? V1.2.6 for Joomla 1.5 or for Joomla 1.6? (Or lower?)
All contain this lines of code:
// When javascript is turned off there is no input field validation //
if($name == "" || $email == "" || $username == "" || $showpass == ""

{
echo 'The system has identified you as a spambot';
So if one of these values is empty it will stop adding user and display the message!
Maybe you have changed something in the code that causes this. Otherwise it will be a bug in my component.
Can you tell me which joomla you are on 1.5 or 1.6. And give me your settings in the configuration of Add user frontend. Write them down
And if you manually edited the code in the component, it might be helpfull to post me the code in /components/com_adduserfrontend/views/adduserfrontend/tmpl/default.php
So i can recreate your setup and see whats going on!
Tnx Kim
Kim