m8 Buffer underrun protection or BurnProof got nothing to with u burning successful CDs. if u writer doesnt support this however, then not really a good idea to be using ya PC while CD is burning, ie. playing a game or listening to music like mp3s.
Seems to me u aint having that problem if it keeps stopping at 68%. Are you recording directly from another CD? Could be the source CD you are trying to copy needs cleaning. Are you recording from an ISO or image file? Could be partially damaged or corrupted.
If you are recording directly from another CD what i would recommend, is that you create an image of the file. ie. copying it to ya hard drive then from your hard drive to ya CDR.
Also i would recommend using CloneCD. I'm forbidden to give reasons why u should use that proggy or the crack that gets passed u only writing at 2x when unregistered, but it's a very good proggy
