I have a 2.16 Core 2 Duo Macbook pro and I need to write to a DL DVD disc. I've tried a couple blank discs. Sometimes when I put a blank DL DVD in the drive it says its not readable and sometimes if I restart the computer it shows up as a blank DVD on the desktop. I can't write to the DL DVD at all (even if the computer decides that its "readable") whether im using toast or just dragging files to the disc then clicking on burn, right after i click burn it says an error has occurred. ive tried burning an iso from the disc utility and it says the laser couldnt get hot enough or something like that. It says on the box to my computer the following: "slot-loading 6x superdrive (dvd+r DL/dvd+-rw/cd-rw)" I don't get it because from reading that I think it should be able to do it. Does anyone know??