I have attached a screen shot. I created a playlist called 10am. Loaded it from beaTunes with 17 minutes of songs. After playing them I deleted them and the description at the bottom of the screen now correctly shows zero items, but still retains the previous time and file size. This makes it difficult to calculate totals when I add new songs to this list.

This happens whether I delete the old songs directly in beaTunes or from the iTunes "side".