I have a Samsung SH-W162C writer and have Nero 126.96.36.199. For the last few days I am having this problem of getting a blank DVD after a successful burn. I have tried 4x, 8x and 16x. I have also formatted my disc reloaded XP and Nero. Still having the same problem. The disc gets written on, when I look at the back of the disc. But the comp says its a blank. Here is the log for the last burn. See if you can make out anything.