I am getting the following error message a few times a day, and my knowledge of the inner workings of Magento CE 184.108.40.206 is thin enough that I don't know if this is normal, advisory behavior from Magento, or if it is telling me I have a bad problem.
Here is the message:
One or more of the Cache Types are invalidated: Blocks HTML output. Click here to go to Cache Management and refresh cache types.
Refreshing that particular cache makes the problem go away for a couple hours or so.
I am not currently editing layouts, products, etc., nothing at all.
What is wrong and how can I correct it?