I'm not sure what exactly is causing it.
If it's a server error, then it's not something I am able to fix by myself. I can only alert the webhost about it.
The dreamhost team are pretty good at discerning problems and getting them sorted out, but sometimes it can take several days for running processes to return completely back to normal.
We are on a shared server so if we are experiencing some difficulties, it's reasonable to assume that a few other websites are also affected. This means they will probably already be working on rectifying the situation as I write this.
The moderators do check this forum regularly so please don't worry if you accidentally double post on occasion. It's no trouble for us to delete the duplicate posts (gives us something to do actually.
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I checked the forum error log and there is no record of the error there. Please copy it for me next time as this helps me greatly when contacting the support team.