However when you forget once for several thousand customers all at once, each one is likely to take it as a seperate occasion. It's also perfectly normal to treat a mistake that affects orders of magnitude more people as orders of magnitude more irritating. Also it wasn't amusing for anyone affected that I've talked to, it was a combination or irritating and annoying.
Someone who worked around the issue himself, but then got to spend hours via ventrilo and skype helping other players adjust their DNS settings so they could play the game they'd paid for.
P.S. Dear Sony: I would gladly maintain correspondence with your name / hosting providers in exchange for continued all-access membership during such periods.