[QUOTE=Francksoy;2154573]This is the description of the infamous “specks of dust” issue. This is a common problem.
When discs have significant specks of dust on the recording side during the writing process, the burning laser gets diffracted and as Dakhaas mentions, there is an unburnt spot underneath, the size and severity of which depending on several factors.
Depending on the size of the specks, the type of disc (DL being more sensitive…), the burner, this can lead to entirely unsignificant, or to very annoying, writing/reading issues. With all the in-between cases.
Finding a proper, secure way to dust discs before writing is often overlooked, but it’s the only solution when discs are dusty right out of the pack. Of course, it’s sometimes also the user’s fault, if the packs are just left open, the discs laying on some surface etc… a disc should be taken out of its package only just right before the burn. ;)[/QUOTE]
Thank you for your elaborative comment. I, indeed, assumed it to be a problem related to dust. However, I only take discs out of their pack right before the burning process; they go right into the burner with no further delay. This never happened to me with single layer DVD discs nor with CDs. DL being more sensitive must explain the reason for this taking place. This problem is very frustrating, a real bummer…