I recently tried to create an account for my younger brother using parental controls. Although I was able to create and configure the account successfully, when I try to login to that account, the computer hangs during the login window, when I enter the correct password! I must shut down the computer manually in order to restart it, by holding down the power button. Same thing happens with fast user switching enabled. I tried repairing permissions with no result. I cannot allow my brother to use this computer without any restrictions as to what he will see. I have my own reasons for doing that. And I am also afraid if this problem is the result of a much bigger one I haven't noticed yet! Can anyone help me?