So far I've been able to burn 6 CDs and kill 6 others. I've used Memorex 48x, Imation 52x, and TDK 16x. I just bought the Memorex ones. TDK seems to work the best. The error's always the same. It takes 3 hours to make a movie, writes the lead in, and then pops my CD out. According to the log, it fails to write at 8x. After it ejects the CD, it is no longer usable. I've tried reburning with other programs, and it won't work with the CD. What I have to do is just keep popping in new CD's until it works. Anyone else have this problem? I haven't tried burning at a lower speed, but Ishouldn't have to burn at 4x when I have a 12x writer. I have underrun buffer on and also determine max write speed. And I'm not overburning.