Out of Date definitions

I am seeing the following, I want to get this corrected. It was fine for a week, I am wondering if I am just a little behind here and it will work itself out on its own, but nearly 90 % of my machines are showing that the last time this was updated was May 31st. I want to make sure my clients are current and do not fall behind. I am not certain what I am missing as everything was ok up until today.