Stardust@home

When I receive a positive for one of the calibration movies, the "negative" goes up by one as well. Anyone else have this problem? It is a little annoying as my positive score goes up, my negative does as well, which throws off my specificity and sensitivity stats.

I have almost 30 entries listed in my "My List of Data Viewed"! I can only remember clicking on 2-3 tracks that weren't test movies. Almost none of those 30 have tracks in them. How can this be happening?