No need to apologise for hijacking - it seems a few of us are getting the same kind of problems and no solution being provided.
Matt - I did get a mail off Sean which I responded to with further questions as, to be honest, the response wasn't very useful. He highlighted 3 possible IP addresses that could be causing excess processing on the server but he also confirmed that there is very little activity on the site so what exactly are these IP addresses processing? I checked the DH console and yesterday there was about 16MB of traffic on the site - is this a lot? It seems very small, especially given I was doing some changes on pages yesterday and this would update the caches.
So given the traffic is low (16MB yesterday, 8-10MB on a normal day) what volume of traffic can DH cope with and if the IP activity does not effect traffic then what exactly is it doing? I'm not very techy so no idea how to trace any of this.
As Steve the chap who also posted on this thread is experiencing, it seems that some 'deamon' DH system is killing our website. Not sure what this is or why, so any help on this would be useful.
Finally, and I say this every time and no one seems to listen, but during UK day time I get no problems. I only get issues when US comes on line (from about 4PM UK time each day and evenings) - this would suggest to me that the extra US traffic on the servers is what is causing us issues. Is there a high processing site on our server that is causing this to kill other sites?
I hope someone at DH will get back to me on this as these issues have been ongoing for months and still no solution.