Just not as family friendly here. A couple times I had to completely uninstall to get other programs to install correctly. And some little things with programs where if I uninstalled DefenseWall all was well. With Comodo I still don't get infected and everything just keeps working. K-9 is a keeper in my book, no performance hit, you can pick what you want protected against,and lays quiet unless you need it, I doubt the small kids even know it is there.