My windows vista business keeps activating about once a week on my Toshiba laptop. I boot the computer and all of a sudden I get a screen saying activation was successful. I then have to reboot. I reinstalled windows so it's not a virus. Someone must be sending it a command by remote control. I know some people pilfer windows from work, but this is obscene. I got this copy legitamitely by buying windows xp professional during the vista upgrade period; you then get the vista upgrade too. Thought I'd get vista ultimate, but the cheapos gave me this. If there are no clues, I am going back to xp. I'm not spending another $100 for their problem. By the way, the sound drivers are pitiful as I've read often happens when you upgrade windows. Windows sounds are distorted and rattle, but I can live with that. Music plays ok, tho. I will say I got a lot of service out of this xp professional with its iis in writing a website with asp.net.