It is well and happy 10 years ago that my CDs and DVDs were burned by a burner, ie the burn process has indeed ended, the medium itself is not readable - even in the device itself! Meanwhile, the empirical drop rate is about 50%, regardless of whether a CD or DVD, mark blanks or cheap blanks, 2x speed or maximum. A little research on the net revealed - this is a known problem with this torch! Is it the hardware? No, because of the "ASUS" burner is actually a LiteOn device, probably more accurately the model iHAS124B. Now Asus has however been no trouble in the firmware, it is version "1.0" sometime in 2010 and another does not exist, while there is clearly LiteOn diligent and has now reached version S, which dates from the end of 2011. However, it should be possible to "cross flash", which dissolve the unit, the problems in air. Because the device is not very expensive, I'll take the risk - when the torch is gone, I will buy equal the original.
Otherwise - the processing is cheap. The drawer makes a little confidence-inspiring noise when opening and closing. The drive is very loud when burning and reading at the highest levels.
UPDATE: Crossflashing was successful. It is now a "iHAS124B AL0S" 5 CDs later, I also know that it was worth it; Errors = 0%! Unfortunately, the firmware does not affect the noise that organized the drive ;-) search engines lead you to your destination quickly. The occasionally-to-find information that would run the firmware of iHAS524B, I can not verify; Drive could be true flash it, but it did not read more media.