Anybody have trouble with Need for Speed Underground or Kain Defiance?

[Jmanultra]

I've suddenly hit a wall recently when I tried to backup both Need for Speed Underground and Kain Defiance. I've made a few backups of each and they start to load but then they just seem to stall and never finish loading. I've been using TDK media without any problems. Could this be a laser issue? My other backups still work fine. I'm stumped as to what's wrong.