A while back I complained that burned DVD's were hanging up when I tried to play them. There were various suggestion about what to do to fix the problem. Mostly to get better quality DVD's. That was a good suggestion but I had quite few in stock of the other ones and wanted to use them up. I found that washing the disk I got from from Netflix seemed to fix the problem. I've been able to play the half dozen or so without any problems so far. Today in the Seattle Times Newspaper Peter Marshall gave an explanation about CD's which might be of interest to some of Slysoft users. This might not be of interest to a lot of you but I found it interesting so I have reproduced part of his article for you to read Hope you find it of interest. Have a nice day ------- Peter Marshall answered A: Since you refer to the "shading" on the disc it seems you know about the difference between commercially produced CDs and "burned" CDs. Just in case — and for the benefit of readers who may not know — I'll go over the difference anyway: Commercially produced CDs are produced like old-fashioned vinyl records, with a machine cutting pits and grooves in the plastic that are later "read" by a laser scanning over the surface. Burned CDs created on a PC employ a different process. With burned CDs, lasers create a pattern in a layer of dye on the disc. The pattern in the dye is later read by a laser. Commercially produced CDs can be read by virtually any CD player, unless they are too scratched or the CD drive is too dirty. With burned CDs, unfortunately, the results are much less certain. The dyes used in a given brand of recordable CDs work better with certain drives than others. So the CD you burn on your computer may or may not be readable on someone else's computer or on a car CD player. The first thing to do is to make sure that the CD drive in your computer is clean. You can try blowing a little compressed air into the drive to clear out any dust. If that doesn't work, you might try a cleaning disc, available at your local electronics or music store. If the drive is clean and you're still encountering the problem, it may just be that your drive doesn't work so well with the dyes used in certain brands of discs. Finally, it is possible the laser in your CD drive — or in the drive that burned the CD — might be slightly out of alignment. In that case, results won't improve until the unaligned drive is replaced.