I know that it's against the rules to post about hacking the Linkstation but this info is of use to the Admin and the Engineers on fixing this problem. Out of intrest i got my old HS-DH320GL and updated it from FW 2.10 to the new FW 2.21 and i then had the problems that other people have noted here with the Hardrive being constantly active even when PCast is off and being locked out from using the LSupdater software. So i then set about telnet hacking the Linkstation and logged in and typed PS to bring up the processes and two where associated with the Media Server so i killed both of those processes and the Hardrive went instantly quiet and i was able to run the LSupdater as before and was able to run version 2.10 , 2.11 beta and the latest 2.21 without any problems. So the problems are associated with the new PS3 Mediaplayer implementation and the Engineers will have to add a way to the firmware so the end user can turn it off like the older PCast.