I received the following off the Full Disclosure list. Makes me wonder if a worm or deliberate attack is the final cause.

You can find the DOE report here: http://energy.gov/engine/content.do?...TLIGHTDOCUMENT

~~~~~~~~~~~ Key Events ~~~~~~~~~~~

The first computer failure was to logging and alarm systems.

14:14 EDT: The control room operators lost the logging and alarm function.
14:20 EDT: Several remote location console failed
14:41 EDT: The primary control system server hosting the alarm function failed/ Its applications and functions were passed over to a backup server that was standing by.
14:54 EDT: The back-up computer failed, and all functions that were running on it stopped.
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