I have copied and burned several DVD's. All play in my computer from the folder. When tested OK I do the burning and test again in my DVD player in family room. Tested OK and then I put a label or if printable I print from my printer and store them. Several weeks later I want to see the movie and most of the time two things can happen, I get a message "Incorrect Disk" or the movie starts playing and after several minutes it freezes and lock the player. I read sometime ago that the dye used in writable DVD's is organic and with the heat from the burner will eventually get corrupted. Is not a software or encryption problem. Is this correct or what? I use Verbatim 4.7GB for printables, Sony 4.7GB for labels and Verbatim 8.5GB DL All +R Thanks.