I don't know what happened, but it appears my computer has trojans or a virus. Pages keep popping up every minute or so, even with pop-up blocker on. It keeps saying threat detected, it keeps trying to change registry values. I'm trying everything but I don't know if I can get rid of it. I'm writing this because, with my last computer, it was working ok and then the next morning it just wouldn't turn on anymore. So, if I end up disappearing, it's because this computer succumbed to a similar fate and it would be some time before I get another computer.