I suspect that this is due to another app I have been working on - a real time web game called constantsail.com.
I am now setting up a separate server for the that game so that it's performance does not effect editthis.info. I expect it will be set up within the next 48 hours, and hopefully this resolves the issues.
This problem has been resolved and you should not see any more server errors relating to this problem. The app has been moved to another server.