I also finds burning in MorphOS to be quite unreliable. For example, my Mac Mini has been able to burn CD-RW for forever and one day it simply decided to not work anymore. Same was with my Powermacs. Everyone claimed they burned successfully but every time all they did was erasing the CD-RW. Burning normal CD-R did not work either. It was the same with three Poermacs. Only my Ibook and Powerbook seems to work fine for some reason.