It's a chipset limitation of the PX-W2410TA/TU and PX-W4012TA/TU that they cannot write (*PERFECTLY*) SD v2.51.021 plus. Plextor or Sanyo have absolutely no agreement with MacroVision, otherwise, why would the Plextor's perfectly cut all versions of SD2 up to and including v2.51.
020
However, they support *almost* correct EFM encoding of regular bit patterns. Up 'till SD v2.51.021, they were deemed to support *CORRECT* EFM encoding of RBP. Anyway, they can create copys that work anywhere with AWS.
Yamaha's cannot even write any SD2 version perfect. Plextor's could write all versions of SD2 under 2.51.021 absolutely
*PERFECT* MacroVision needed a revision of SD2 to stop the Plextor's and writers based on the Philips chipsets (Acer etc, which were very popular for SD2 writing) from making perfect copies and they suceeded
Trust me, if it was a firmware issue, it would have been fixed many, many months ago...
@ Nothacking person,
I don't care really. I have no allegance to any company. I have the PX-W2410A, and Lite-On's LTR-32125W and LTR-48125W and all I can say is that the Lite-On's save you a minute or so in the write and the "feel" of them is cheap and shoddely manufactered and poor quality made, to cost the bare minimum to their bottom line. However, they are no doubt a very good buy for the money. (like L.A. said, "BIC shavers, disposable and cheap assed crap"

)
Lite-On can't even put their logo on the front of their drives, instead stick a sh!tty URL sticker on it
And they try to beat Plextor to release the faster recorder, and forget to have a "decent" firmware that works. (You have to wait a few weeks until they finnaly tune it a bit so it can actually write a CD

).
I thought that the PX-W4012A WASN'T a very good drive to what the competition offered. There were simply too many limitations for my liking... Like RAW-DAO writing was limited to 32X and CD-DA writing was limited to 24X. I simply didn't like that so I never got the W4012A.
But come on, there was NO better recorder out than the PX-W2410A at the time of it's release.
No question about it.
_________________
You get what you pay for...