I have a Sony DRU-510A 4x burner that I've been using for years now and I have never had an issue burning onto disc until I bought 16x dvd-r media. I'm figuring that my burner is just outdated to burn 16x disc (no matter what brand, but I use Memorex). I use DVD Shrink and Nero 6 for the software. Can someone tell me if this is just how it is or is there something that can be corrected.