[DISCLAIMER: I hope this is posted to the right place (Digital Video) to get attention and accurate answers from the people who are most likely to know. If it's in the wrong place, mods, please move it.] OK ... Serious question time. Sony blamed the shortage of laser diodes for the PS3's weak launch numbers. Low availability means lower production numbers, etc, etc. OK. According to Wikipedia, HD-DVD and ]Blu-ray both operate on a 405 nm wavelength, which is created by a blue-violet laser. This is where you say, "Wait ... what?" Now ... let's look at something. Not only are HD-DVD and Blu-ray players readily available on the consumer market, but Microsoft just shipped a metric crap-ton of HD-DVD add-on drives for the Xbox 360. So ... If there are plenty of the infamous blue-violet diodes out there to make set-top manufacturers and Microsoft happy, what's the problem with Sony? The official reason for pushing back the EU launch was a shortage of diodes. Presumably, that's the same reason that the US and JPN launches have been so anemic. I don't get it. If HD-DVD and Blu-ray operate with the same laser (on the exact same wavelength!), what's really going on? If there's someone can shed some light on this, please do.