First off, I have Windows XP Home. Recently while gaming, mostly World of Warcraft, I noticed that every 3-4 seconds the entire game will lock up for a moment. This happens consistantly during play and led me to try to figure out why. When I bring up the Windows task manager and look at the performance tab, I can see the CPU usage spiking to around 50-60% in about the same timing as the hiccups WoW experienced. I assume this is the cause of it, but I do not know why this is happening. Any ideas?