I think most of you are missing that we're not talking about deleting one (1) file, but a directory with files in it. He's talking about trying to delete a file "inside", but what are the permissions on the enclosing directory ? This might be basic Linux/Unix file/directory permissions that are confusing the OPer. It seems to be very common for N9 owners to not know Linux/Unix ... (sigh, when reading about flashing, it seems many do not even know Windows in-depth, but I digress ...)