Re: I doubt it
i was once told an anecdote. the major investment bank they worked for failed in it's overnight payment processing repeatedly, every night. Eventually they determined it was happening at exactly the same time each night. so they upgraded the ram/disks. patched the software. replaced the whole server. nothing helped.
Finally, head of IT decides enough is enough, takes a chair and a book to the data centre, sits in front of the server all night long to see what it's doing.
and at the time when the batch failed every night previously, the door to the server room opens, the janitor comes in with a hoover, looks for a spare power socket, finds none, so unplugs the nearest and plugs in the hoover. yes, you guessed it, plug that was unplugged was the power lead for the server in question.
just because you're a big firm, doesn't mean you don't get taken out by the simplest and stupidest of things