Greetings. I have had dust problems with a couple of different Pioneer burners DVR104 and DVR-105. I have a fairly dusty home environment and after a couple of months of use on either drive, I started to get dust shadows on recorded media. The symptoms are skipping and glitches on video discs. The problem has been documented by someone else: http://www.bealecorner.com/trv900/DVD/DVD-dust.html It rarely occurs with DVD-RW media, but it happens a lot on DVD-R particularly at the perimeter of the disc, which is probably where the dust is thrown as it spins. I have found a couple of media brands that seem resistant to it, and it occurs only occasionally, and a couple others that occur with greater frequency. To avoid the problem, I've blown out the drive with compressed air, vacuumed the computer and blown off the eject tray and inspected every disc before recording, but I still get problems that I can easily see on the media that cause corresponding glitches in several brands of standalone DVD Players, but all these discs "pass" verification on the PC. I even took the DVDR-104 out of the computer, disassembled the shroud and used an entire can of compressed air to clean it off. Put it back in the computer and more dust shadows. Even tried recording at minimum 1x speed. Now, I have to ask if there is a brand of DVD recorders that doesn't have an integral fan like my Pioneers do, and maybe even one that is sealed to prevent the PC's internal fans from using the load tray as an intake vent? Thanks!