I still haven't seen this message.
I don't have the contact details for the host either, so have asked Simon to provide it to me. That said, the cPanel isn't showing any issues, in fact we're barely scratching the surface of the server capacity.
We have had issues with ******** in China and elsewhere trying to register for accounts. They've been eating our bandwidth, but I've blocked loads of IP addresses and it's calmed down.
For the record, I've never liked this vBulletin platform. It's difficult to understand, and quite restrictive. Maybe if we had a whip round we could migrate to something better. The other platform I use has many more users, no issues, and is very easy to manage.