A few months ago I was getting some 500 errors that it turned out to be the hosting company`s own seo caching plugin - resolved with an update.
A few days ago the 500 errors have started recurring intermittently. I reported this today to the hosting tech support... and the reply I have is this...
"The issue is caused by BingBot and Google Bot, they are making too many requests to your website which causes load and crashes the server.
Here are some of the BingBot requests which are around 12 000 for today"
The question I ask - is it a reasonable assumption that this is the cause of the problem?