Because I am forced to share files with the Windows world, and because I run Virtual PC (VPC) on my Mac and share files between VPC and my Mac OS, I still need to use antivirus software. My company's choice is Norton AntiVirus 10 (NAV; packaged as part of Symantec Solutions). Installing NAV 10 on my Mac also installed Norton Auto-Protect and the Norton QuickMenu. Both are configured and controlled through separate preference panes in my System Preferences.Being an anal-retentive, obsessive-compulsive user when it comes to my Mac, I try to limit 'background' apps and the like as much as possible. For NAV, my only use is to scan specific files as needed, so I obviously didn't want the Auto-Protect running, and certainly didn't want the QuickMenu cluttering up my menubar or taking up any unnecessary resources. Disabling Auto-Protect was simple enough: I simply de-selected the checkbox labelled Enable Norton Auto-Protect in the Norton Auto-Protect preference pane.