I've had a lot of spyware/adware issues lately, but I think I have them more or less taken care of now.  About a week ago my Windows Media Player wouldn't open, so I redownloaded it and now it works fine.  Ever since then, however, my computer has been unusually slow, sometimes taking 10-20 seconds to even respond when I click on something.  Certain things freeze up randomly, many times Microsoft Word, and I get a "Word is not responding" error message.  A few other things give me that message, too.  I found a page with all sorts of tune-ups that I tried, but nothing helped.  I defragged recently, I run Ad-Aware and Spyboy S&D often, system restore won't work, and my hard drive isn't even half-full.  Something has to be wrong because it wasn't this slow until very recently.  I need helppppp