The only difference between my system and a colleague's is he has a Pioneer 104 and I have a 105. We both run XP on very similar spec. systems. Using DVD Decrypter, DVD2ONE (or the new 1.11 version) and Nero (184.108.40.206a) he gets good burns on any media (almost any) and I get a burn that seems to go okay but pixellates and skips chunks of the movie. I'm mostly using Datawrite Yellow x1, and did have one successful burn with them a few weeks ago, now it's all coasters. I shut down everything else (Norton etc.) for all stages. Is the 105 that fickle?