A Google search on FinallyFast.com brought up a number of websites mentioning that this is a scam. At least one mentioned that their references in Forbes, Wall Street Journal, etc. that the commercial claims are phony. And I didn't notice that the commerical shows people using Apple computers though the commerical says FinallyFast.com is for PC's only (which technically, even Apples are PC's, but for some reason, the term PC usually applies only to certain ones like those made by Dell). I don't know if those are Apple computers or not; perhaps so, but I can't say for myself.
Perhaps it is a scam. Some websites also mentioned something about charges though the commercial says it's free. If that's true, then someone ought to sue them for false advertising!
That's why I asked this question first before trying it because I know commercials often make claims that are exaggerated or even downright lies. I wanted to be sure before trying it that I wouldn't damage this computer.
By the way, I used Symantec Antivirus to scan the computer, and it revealed nothing. But the one person who has responded so far said that he's found malware on his computer that antivirus software didn't detect. I believe there is junk here somewhere because I have used multiple computers before with few problems. My old one had few problems, and so did the one I used at UK. And I doubt the problems are caused by me trying to use too much stuff on the computer at once because virtually all these problems occured when I was just browsing the Internet with nothing else opened (in this afternoon's case, I had Notepad open to type a response for sci.math, but that was all that was running besides Internet Explorer). I am baffled right now and would like this problem fixed so that I can teach online without worrying about this computer suddenly freezing up on me.