I think this may help you.I had problems with sluggishness also but my model is a different make.I sped up my system by removing many of the applications I that gathered in my toolbar at the bottom of the screen(except the most used ones)and putting them into your desktop or other folder,as when you do any activivity,your processor will go through the whole lot in that toolbar before deciding which utility to use.(slows your CPU down)Hope that works for you.
Chrys, July 2008