Hey all, as many of you know I recently bought a new computer with a CD/DVD burner. The computer works great but I seem to be having a lot of weird issues with my burner, so I'm wondering if maybe you guys can help me troubleshoot what is going on here. To burn CDs I use "Roxio Easy CD creator 5 basic" at 16x speed. Lately I've been using old CD's from a friend who uses them in his CD duplication business. Most of them work fine but have come out misprinted so he gives away the blank misprinted ones to people who may need them. My problems started the other day after my first burning of some data back-up, on that occasion I used a blank HP disc and that worked fine. Ever since though I've been using my friend's discs and that is where the problems seem to start. Using Roxio I tried to burn something on my friend's disc but it didn't work instead spitting out the disc and giving me 2 errors "buffer underrun error" and "retry failed". I went through the whole stack of my friend's discs getting the same errors left and right using Roxio. However when I tried burning one of the spit out discs on "Real One" it worked fine. I went to Roxio and tried it again, this time unchecking "buffer under run prevention" and it has worked fine since until today when I ran out of space on that CD and had to resort to using one my friend's last CD's in the stack he gave me, burning with "buffer underrun prevention" off. Once again this one didn't work, but it burned most of the way (98%) than give me the same 2 errors described above. I did manage to do a burn to my HP disc and after a little trouble (user error ) it worked fine(I burned this one at 8x). So far there have only been 2 good CDs in my friend's stack, one burned with "Roxio" and one burned with "Real One." I'm utterly confused by this and am trying to figure out if it is the discs or Roxio or my burner, maybe the speed setting. The computer is only a week old so I'd be suprised if it is the computer. I am leaning towards the discs being the cause but I'm not so sure. I've tried everything, closing open programs, restarting my machine, disabling virus scanners, defragging my drive and nothing seems to work for those other CDs. Anyone have experience with this? what does it sound like is going on here? Do I need to adjust my burning speed down maybe from 16x to 8x? Never had these problems with my old burner. thanks.