It's weird. I've experienced this myself. If you rescan the Liteon burned discs, using Nero CD-DVD Speed quality test and transfer rate tests, you should find that you get good results. For some reason, with 2S firmware, the Liteon has problems reporting errors on the discs it has burned itself. In the real world the discs appear to be fine. I've never had a transfer rate test, on these sort of discs, even dip slightly . BTW, VS0E does the same thing.