Thank you for displaying the information. You are correct about the reason why the command I gave you is not running, it is because the process is sleeping waiting for additional input.

Since it is sleeping that means it is working as it should, but the load you are experiencing is due to strain being put on your graphical display by applications, desktop enhancements and desktop effects.

What kind of video card are you using and are you using the compiz fusion items or anything else special to "pretty up" your desktop?