I OWN 3 OF THESE UNITS. A SHORT WHILE AGO MY DISCS STARTED TO FREEZE UP. I INSPECTED THEM AND FOUND THEY WERE ALL SCRATCHED , AT THE SAME PLACE, ABOUT .5" FROM THE OUTER EDGE. ALL MY DISCS ARE RUINED! ALMOST 1200 OF THEM. I TRIED TO NOTIFY SONY ABOUT THIS PROBLEM AND GOT NOWHERE. I TRIED THE CD/DVD REPAIR KITS, BUT THEY DIDN'T HELP THE SCRATCHES ARE TOO DEEP. SONY CUSTOMER SERVICE SUCKS! I WILL NEVER BY SONY PRODUCTS AGAIN!