My webhost just turned mine off and sent me this email:
It appears that WordFence was being used on this site to perform connection tracking. This resulted in the site constantly posting data to wp-admin/admin-ajax.php. The resulting CPU load was potentially affecting the service of other users. As a result, WordFence has been disabled for this site. It appears that the WordPress installation is being kept up-to-date, and BulletProof Security is still being used, so the Web site should remain secure. Thank you for your understanding and cooperation.
I did go to live traffic in the morning and basically keep it up all day – but it was very useful and I would like it back! Does anyone have any answers?