I'm using an emac and Toast Titanium 7 to burn some CD's. Sometimes it starts burning straight away but a lot of the timee it keeps starting and stopping a half a dozen times before kicking in. One time it reported some sort of begining and end, write error and wouldn't burn at all. The CD's are make in Taiwan TDK's. Does this sound like a CD problem or a burner problem? And are there any hardware test to check the burner?