I have been burning DVD for 8 months now. It seems as though lately when I burn a DVD shrink tells me everything burned correctly but when I take the DVD to a DVD player the player says bad disc. I go do three DVD in a row with it telling me it's a bad disk and then on the forth try it works. Why is this happening. I don;t think there is a problem with the DVD's. Has anyone been having this happen to them?