I've posted a few times about having some lag. I have finnaly solved it I opened the computer and used a can of airsol to clean everything out. Whenever I sprayed the fan there was a layer of dust about half and inch thick that has been acumilated over the 7 years I've had it. The ironic thing is that we have put around 300 dollars into this computer trying to get it working better, and all it took was a 5 dollar can of airsol...frustrating...huh?