you could try editing the icon command line
i.e.
start /low c:\mcaffeedirectory\executable
but i havnt had much luck with that so far,
or once its loaded do ctrl+alt+delete, go to the task list and set the priority by right clicking on the mcaffee task.
hope it helps
This behavior must not continue! Feel the BURNING STARE of my HAMSTER... and change your ways!