I have a strange problem. I just bought a brand new Pioneer DVR-111D Burner. Anytime I burn and image (doesn't matter what type of image), it burns fine the first time. Then I go and reload the image straight away after the first burn, attempt to burn it again, and then about a minute before it finishes, the cache just drops and I get buffer underrun error. I try it again, and sure enough, buffer underrun error again. So I go and reboot and the first burn after the reboot, works just fine. I go and do a second burn straight away, and again, buffer underrun error. No this only happens with the Sony DVD-R's I am using. I have used this media for years without this problem. I am using DVD-R's from 2 different 100 disc spindles. One spindle is half way done, and the other is brand new (just opened). I opened up a new spindle because I thought my first spindle may have been bad. So then decided to upgrade the firmware, but problem still persists. Here's the kicker. I have tried a few cheap Memorex DVD-Rs, and I don't have this problem. Pioneer's webpage says the Sony Media I am using is compatible with this burner. What do you people think. Could I really have 2 bad 100 Sony DVD-R spindles?