I burning a movie with 8 speed, and have tryed with 2 speed, i have a image of 790 mb, this problem occurs with this burner, the acer 2010a i have bought a plextor, this moment, and no problem anymore, the old acer of 8 speed has no problems, i have open the acer 2010a and it has a phillips laserunit and engine the same one as used in the famieus 3610 burner with his problems, phillips has bad things except the tv set, everything what has a angine in it and it is phillips leave it for what is was. greetings kees