I used the last years always Internet Security and was always completely satisfied. However, the 2006 version is a horror! Here must be something went wrong. Since the installation, I've got nothing but trouble. Permanent crashes of various programs. Then again an indication that I had no authority and should uninstall. The latest gimmick: daily through the Live Update automatically outdated virus definitions loaded (with preference those from 25.12.2005). Often with difficulty one can then only download the latest virus definitions to get then reloaded the old definition for the next startup. The program update a few days ago has the PC for some time completely paralyzed and I could with difficulty bring back to pottering him first.