This software is a definite no-go for me. I installed it, and it slowed my computer down to a crawl (XP SP2, 512MB RAM). Then the next time I tried to reboot, the only thing that would appear was my desktop wallpaper... no icons, no taskbar, no anything. I shut the computer off and attempted to boot one more time - same result. I tried a third time - same result - would not boot. I finally booted into safe mode and uninstalled it. I rebooted, and my computer booted normally and ran like a charm. I don't know if there were any other software conflicts, but the only other security apps I run are Threatfire and Winpatrol. I also use SAS but at the time I did not have it set to run at startup. I never had any problems whatsoever with 7.5, but this new version is absolutely unusable for me.