Anyone who uses a computer can vouch for the fact that too many downloads can slow down a unit. Mine has been through this on a daily basis. Recently, the free software I was using ran out on the offer. They expected me to buy their updates. I believe that most website's do the same thing, therefore I make an effort to get free trials. I'm not sure about the clean pc website, but I will do some investigating into it's service. If interested then you should also.