I know very little about supply chain management but I do know that many electronics companies use a "Just in Time" process (essentially producing slightly more hardware than you need to meet demand) becaise tje cost to produce a system tomorow will be far less than producing it today and paying for warehouse space ...
The fact that Sony has huge piles could mean a couple of things ... Sony and stores greatly overestimated the demand for the PS3 OR over the past couple of months Sony has overproduced systems due to lower demand and now have enough supply to meet the increased demand for the PS3 with few problems ...
Personally, I think that it is a combination of the two







