Blu-ray discs rotting?

Reports are coming in that Blu Ray discs, in particular the film The Prestige are suffering from disc rot. Video producers have waited a long time for a practical HD distribution format, and then the corporations fumble with the HD-DVD/Blu Ray format war.

Blu Ray appeared to be winning (if only becuase the PS3 with built in Blu Ray playback meant more players for that format have been sold) but this may throw a spanner in the works and halt the format's forward march. I can say I would think twice about buying a format that exhibited this kind of flaw. Is it only a single batch that is affected (as is implied by the fact that so far only The Prestige seems to have the problem)?