We had a customer who’s Drupal site got compromised and eventually banned. We stripped out all the old Drupal, and uploaded a minimal WordPress version of the site. The hosting was so sluggish that we often got time out errors trying to navigate the site. The back end was the same.
The host is Godaddy, so we contacted them regarding the issue. The CPU usage was pegged at 100%, but the there wasn’t anything else running. While searching the CPanel we discovered there was a Cron Job running.
Even after removing this the hosting was too slow to work with. We ended up going to the screen before you access the CPanel and choosing “Reset” to reset the entire hosting account. It took about 45 minutes before we could re-install the WordPress site.
Let us know if this helped you…