Hacker Geohot claims he has a plan to permit PlayStation 3 (PS3) users to continue running Linux on the gaming system, despite Sony's announcement that it will block alternate operating system installs. On Sunday, Sony announced that a 3.21 update due on April 1 will prohibit the installation of alternate installations, due to security concerns. Sony's upcoming April Fool's Day update, which prohibits alternate OS installations on systems prior to the new "Slim" models launched in September, is no laughing matter to Linux hackers who have enjoyed a four-year run of loading distributions such as Yellow Dog Linux on the gaming box. Yet the last laugh may be on Sony if well-known hacker Geohot (George Hotz) gets his way.