User blog comment:Bovell/Treyarch begins staffing for next project. MW3 announcement next month./@comment-97.124.95.119-20110330232731/@comment-1719617-20110331030231

The discs do tend to crack. It might be some kind of factory defect. Another possibility, people are just giving these games too much play time and wearing out their discs by taking them in and out of their cases too often.