Hi i had same problem with pioneer 111d then i bought an nec optiac 7200 and i still have the same problem ,have burned a lot of xbox 360 backups without any problems ,when burning on my laptop there is no problem. I allso have tryed the burner in another cpu but still the same . I use aone and verbatim media ,sometimes i can burn on verbatim but that is like 1 out of 3.