XP Shutdown Shortcut

Hi,
I created a shortcut (Stutdown -s -t 05) to shutdown my pc autometically. It shuts down but takes me to the screen where it says “It is safe to turn off the computer”. So I have to press the power button again. This doesn’t happen if i do it normally (from the start menu). So the power button thingi beats the whole purpose of the shortcut. Please help if anyone knows how to solve this problem.
Thanks.