When I play games, my computer spikes every 15 seconds (periodic sessions of excess lag). Every 15 seconds, my computer lags a lot for like 3 seconds, then is fine for another 15 seconds. This happens only while I play games. I have a pentium 3 processor 933/133mhz. I play Starcraft: Broodwar. This hasn't always happened on this computer, only recently. I have 384MB ram and a 256MB videocard. What could be the cause of this? Could it be a bad processor? Or could this be a memory leak caused by hardware problems? What's going on?