A class-action suit filed in a California court late last month seeks to reverse Sony's forced prevention of class-action suits, which the company buried in a mandatory PSN update, following the PSN security breach earlier this year.
Gamespot reports the suit claims Sony engaged in unfair business practices by forcing consumers to choose between giving up access to PSN or the right to a class-action lawsuit over hardware they purchased. The suit also calls out Sony for only allowing consumers to opt-out of the class action provision by snail mail, rather than any modern communication method.
We've contacted Sony for an official statement about the suit.
Update: A Sony representative informed us, "We don't comment on pending litigation."