I just removed the DNS entry pointing back to my old hosting provider, who destroyed my site so thoroughly. Sometimes you get exactly what you pay for. Note to ISPs: If you're providing a backup service, make sure that the tape drive is connected to the server.
I'm now hosted on a Virtual Dedicated Server with Black Cat Networks: run by Debian developers who really know what they are doing. They also support IPv6.
And no. They don't provide backup services. I'm taking responsibility for that.