Well, we had just a mess of problems here. We have had off and on DOS attacks for a week or so, and then last night I managed to embed some oddball code in a quotation in one of yesterdays posts that caused other heartache.
After a lot of debugging, I am hoping all is well again. I have changed the caching and security options at Incapsula, which I use as a gateway for traffic. For many of you, you will see substantial performance improvements but at the cost of some caching which may delay your comments showing up by 10 minutes or so.