I did mention that I had used the cleaning disc and fluid.
One point I just realised is that the problems all started after I rebuilt my PC upgrading from a Celeron 2GHz to an Athlon 64 3000+. Starting from scratch in a new case.
Could a load of dust or similar have clunked about inside the drive?
Got about as many of these discs left in cost as it would be to buy a new burner.
As much as everyone says its terrible media. Seems odd Ive never had a coaster with them, and then suddenly I start getting problems from two different batches.
RiDisc DVD-RW 2x working fine as far as i can tell.
Its getting really irritating.
Just confimed that they can be read by a Samsung DVDROM. But not by the Pioneer.