MoodleFN

We are running 2.1.2+ on an Apache server with the latest PHP and MySQL. I don't do anything; it simply seems to be that when I go to the coursewrok using the Marking Manager any student with no work submitted has the words Moodle Assignment in the feedback area and a grade of zero out of x (where x is the maximum grade). It is caused seemedly by simply using the Manager rather than supplying any feedback due to the fact that I have this with a piece of work awaiting the ending time to occur and I do not recall adding any comments or anything to any student's work; yet there are the words and the zero grade!