Hi, I looked around but I haven't seen any solution to this problem so I hope I'm not repeating myself. I have a Power Mac G5 Dual 2.7 Ghz with 2.5GB Ram. It came with a Superdrive, PIONEER DVD-RW DVR-109. I was using iDVD and Popcorn to burn dvds. I had no problems. At one point the dvds came...