Tech World writes disk problems are to blame for the PlayStation 3 console delay:
Is the new Cell processor stressing the hard drives in new ways? Are there unreported problems with the hard drives it is going to use?
The answers are 'no' and 'no.' It appears that it can't get the AACS (Advanced Access Content System) copy protection function on the Blu-ray disks working properly. This protection is to prevent game piracy. PS3 will ship minus a hard drive but with Blu-ray DVD. This apparently adds expense as Blu-ray is costlier than the alternate HD-DVD format. But Sony is wedded to Blu-ray success and so Blu-ray it is.