yes, ive just installed rockbox onto my brothers ipod for him and whenever he plugs his ipod into his windows pc the computer freezes, after unpluging the ipod the computer displayes a message that read something like "Your ipod has been modified/damaged, please use the ipod restore tool to reformat your ipod". luckly i am a linux user and have a selection of liek 5 other computers that he can use and dont have the problem but it would be ideal if he could use his own computer.