I've just bought a Lite-on LH-18A1H-483C from Microdirect. It seems to burn anything other than Dual layer discs.
It states its a DL drive, I put in a DL disc (datawrite 8.5gb DVD +R DL), but the drive doesn't seem to able to find it. It continually spins, then locks the computer, spins some more then gives in. I've tried all of the discs from a new spindle and Microdirect have come back will a rather poor reply of "They may be incompatible", which is rubbish really considering the box states it burns DL discs.
I've updated the drive to the latest firmware, but its still the same. Any ideas?