I've just purchased the Asus "DRW-24F1ST a" to replace an aged Pioneer that was damaged in a house move. I've been burning data DVDs since 2004 and can count on 10 fingers the number of coasters I've made.
I use (mostly) Verbatim (16x) DVD-R and DVD+R media to burn archive DVDs - very rarely do I bother with audio or video DVDs.
It's a WinXP Pro system, and I'm using NERO to burn.
OK, I've not seen this problem before but when I burn data discs using the Asus (mostly at 8x but I've tried also, 6x, 10x and 16X) every time, when the burn gets to around 30%, the drive spins down and then continues the burn. The verification process passes each time but on looking at the burned disc there is a tell-tale ring at (I'm assuming) the 30% mark (out from the centre).
Has anybody else i) seen this happen with the Asus and ii) can anybody offer a possible solution? It's quite disconcerting.