I am running Joomla 3.0.x and just activated the newsletter module, and am getting the above error.
The form is submitting and processing, I am getting the notification mails for subscription to mailchimp, the system just isn't completing the processing.
I tried adding the jquery no conflict, but that is already running.
The URL is: http://onewebcompany.com/test-page.html
I know the issue is with the slideshow -- when I turn the slideshow off, the module works.
Thanks,
Bryan