I have spybot, and ccleaner. I wanted regcure, but you have to pay. I have Norton internet security aswell. I think there are times when I have a process running on my computer. The fan will kick in for no reason, as I am not even using the computer. What is the diff between spybot, ccleaner and regcure? The spybot might take 1/2 hour, ccleaner only takes about a minute and I don't have regcure. Thanks.