Famous to the Sony PlayStation 3 was the ability to install a Linux OS on to the device for extra functionality and further customization.
However, as of April 1st Sony will be releasing an update disabling the “Install Other OS” feature on all PS3, removing the ability to install the Linux OS to the system.
According to Sony this update is due to “security concerns” and user currently using the function will either be forced to update to the new firmware or remain on the old firmware and be unable to play the latest games or Blu-ray movies that require the latest firmware.
Source:
PlayStation Blog (http://blog.us.playstation.com/2010/03/28/ps3-firmware-v3-21-update/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+PSBlog+%28PlayStation.Blog%29)
IGN (http://au.ps3.ign.com/articles/108/1080373p1.html)