I was quite happily playing Civ4(European DVD) all before christmas, but now my drive fails to read the DVD-ROM. It still plays other DVD-Videos and CDs (Except Donnie Darko I now find out). I have a NEC 1100A (Dell installed) with the latest firmware. There are 2 major differences in my system pre and post working; one being the addition of Sony CONNECT and SonicStage the other being Norton 2006 Internet Security. I've tried uninstalling both but still no joy. Any help here?