I am using a LG GSA4040B DVD Decrypter/DVD-Shrink/Nero 6 Memorex 8x DVD-R for backing up DVD's. All previous media 4x played fine on my Panasonic RV-31, but these Memorex 8x have glitches near the begining and end. I noticed that a few of my other discs that were burnt months ago are starting to do the same(4x). All discs have been burnt at 2x. All the discs play fine on my compputer and PS2, just not on the DVD player. Does anybody know if this is a specific media problem or is there something that can be happening to my DVD player(laser, allignment). It is three years old so any help would be great because my extended warranty is running up soon.