Whenever I burn at 4X in toast 6 titanium I get the same message half the way through, BUFFER UNDERRUN! Why? How can I fix this without burning slower?
I would say it is a media problem because many people have reported problems with TDK. I personally only use Traxdata (Ritek's premium brand) and Taiyo Yuden and have never had a bad burn. Other possibility is an almost full HD. Anyway check this Apple document that explains why the Buffer Underrun error can occur: http://docs.info.apple.com/article.html?artnum=25750
Hey Macburner, I had this exact problem. I operate the same computer and dvd combo. My dvd como all of a sudden started to malfunction and would not burn 60% of the time. End result was a new DVD combo and whilst the computer was in the shop toast 6 was updated with all the latest. I had always had toast set to burn at fastest speed and the guys in the shop advised me to change to 4X. Bad mistake; all i burnt after that was drink coasters. I changed it back to fastest speed and have not a failure in six months/60 burns. Good luck AAiek