I don't normally reply to any of your posts, cause most of the time they are not worth my time, but this whole "They waited a week" crap is getting blown out of proportion bad.
http://www.psu.com/Hackers-kept-Sony-in-the-dark-for-nearly-a-week--a011453-p0.php
As listed here, they didnt even find out what the hackers had done until after the network was shut down and they did an investigation, then traced back that it happened between the 19th to 21st. They didn't have a magical warning sign pop up at the central command brain saying that "GOD" had logged in too late at night ala the movie Hackers.