DVD Problem?????
 

(Mods, I wasn't sure where to post this but I thought this forum the most pertinent but if not please feel free to move it.)

Greetings Everyone,
Some of my favorite DVDs are my Sports Night set. I watch 99% of my DVDs on my computer and I was watching one of them this afternoon and it kept stopping and stuttering. So I ejected it from my DVD drive to inspect the DVD I noticed there was a concentric circle about an inch surrounding the center hole. I hadn't noticed it there before and I was wondering how it got there, if the damage was permanent and if the damage was caused by my DVD-Rom drive (Samsung SD 616T). To avoid this problem in the future, do I need another DVD drive? Thanks for any help, info, tips, etc. It is much appreciated as I need to be able to watch Sports Night. Thanks again.