I don't know what else to tell you. I'm seeing the same "Index of /" page that descalzo is seeing, and the query string should have busted the cache anywhere it lives (locally or on a server in the path). The "Website does not exist" page is not coming from your hosting account, I assure you. You may just have to wait a while -- or you can try clearing your cache and history again (make sure you are NOT on your site in any instance of the browser -- other tabs or windows, any background processes, etc., or you'll just be putting the old entry back into the history).