Alienware 17 R4 setting System/HDD Password in locked BIOS

I am using the lattest BIOS Version 1.20 for my Alienware 17R4
Even so I have set a admin password and the BIOS is locked, it still can be accessed in read only mode.

But it is still possible to set a system and a hdd password. And even save the changes.
So despite haveing set an admin password which ist supposed to prevent changes to the system,anybody can press F2, set a system or hdd password an lock me out of my own system ?

This is a bad joke, isn't it ???