5 No probs with these discs.LaurieP | 17/10/2007 | See all LaurieP's reviews (4)The problems with media are not always related to the media itself but the writer you are using them in. Look at the two previous reviews, one perfect the other the exact opposite. Tansydog claimed to have had 20 coasters from 25 discs. He also showed knowledge of the dye used and the unstability at higher writing speeds. If I knew this information I would not have had 20 coasters. Firstly I would have checked to see if there was a firmware update for my writer for this dye and at the very least I would have lowered the writing speed especially if I knew this would help. If all that failed after a few burns I would have sent the discs back for replacememt. I have seen many complaints about discs over the years, discs that I have used and have been flawless. Some people think if they get coasters that its ALWAYS the discs at fault. Maybe your hard drive is full, maybe you need to defrag, maybe you don't have enough memory, maybe your processor is not powerful enough. Some writers let you write at a speed higher than the rated speed on the disc, this can lead to problems. The other factors in getting problems I mentioned can usually be helped by reducing your writing speed. Writing at a high speed can cause coasters if your hard drive is performing slow or if you have other processes running at the same time. Before you do what tansydog did (waste 20 discs) lower your writing speed and read up on what you can do to avoid problems and keep your computer in top shape.