Hi Marilyn, I have System Works 2000, and I have tried both with and without Crash Guard. My conclusion is I do not install it any longer. I find no benefit from it. It rarely stops having to reboot or close a program and it uses resources that I would rather use for other things. The ol' three finger salute closes things just as well for me. Just my opinion. Brad Loomis Los Angeles, CA I have just bought Norton System Works ver. 3.0. I am running Windows 98 and had a lot of trouble with the System Works ver. 2.0 and Crash Guard. I'm hesitant about installing this new version of Crash Guard (ver 4.0) because of the trouble I had before. I would like to hear from anyone who is running it and if it is causing any problems. Marilyn [log in to unmask] Curious about the people moderating your messages? Visit our staff web site: http://nospin.com/pc/staff.html