I've been more of a lurker, but I've come up with a problem that's really boggling my mind.
I just got a new SH-S203N from Newegg since I read good reviews about the Sx-S2xx series on here.
With my first drive, I installed it and replaced my (working Benq DW1655). I tried to read a few discs, and it read just fine (and fast too).
The problems arose however, when I tried to burn some CDs and DVDs. I get "Power Calibration Error" in Nero Ultra 188.8.131.52, and it hangs on "Writing LeadIn" on ImgBurn. I swapped in a Benq DW1640, and both that and the DW1655 burnt discs just fine. FWIW, I also attempted to burn a few images with Nero and ImgBurn.
I thought the drive was broken, so I returned it and Newegg shipped me another one, which I got today. I popped that one in, and the exact same problems happened again.
However I just swapped the SH-S203N into a spare computer with a cheap ECS i848 chipset (Pentium4 + Intel i848, with SATA-1 via ICH-5). And the SH-S203N worked just fine! (It's actually burning my slipstreamed Windows XP SP3 CD right now).
I hope someone else has had a similar problem before. I searched around a bit and everyone seemed to have theirs working :\