I had 2 hubs that were probably dead in the water, as they were really old and had very few page views. I had been contemplating removing them before the Idle appeared. So I deleted them. If I want I can update or change them and resubmit with better content and a new title.
Most of the others with the Idle symbol needed tweaking, which I did. I re-shared them on some of my social media sites like Google Plus. They've since lost the Idle symbol and are just fine. Many of them have seen more traffic in the last few days.