Website Filtering Stopped Working Today

I have NOF on two computers running Windows 7.  I started having this problem on both computers today, after it has been working for over a month. First I noticed that none of my children's websites were getting blocked that should have been.  I checked the logs online.  It is logging all of the sites, but the "Category" column is blank on all of the sites.   I went through all of the settings and nothing changed.   Is Norton having any issues?

 

Thanks