adding slowness and obfuscation

[dolo724 at softhome.net]

One member of our household has a 1.8GHz RedHat 7.2 workstation, makes it 
easy to administer and solves many problems when I have to interrupt a small 
child who's playing a game. 

We're also into pranks... and here's the question: I'd like to slow the 
machine down for only one user, say from 1.8 GHz to 180MHz or slower. Any 
Ideas? 

Indeed, it's not really ethical, but a good prank well executed is its own 
reward. 

Thanks
Mike Rice