Should be simple/general question: Installed Intego VirusBarrier X6 successfully yesterday on my fully updated Snow Leopard Imac...and then Obsessively ran full and quick scans from MY (admin) session...all totally clean (so far, so good, right?) Then I signed into my son's logon (of course Same machine)--he definitely hadn't been on in between...and ran a scan...and found two infected files. My Question/statement: I assumed that Full Scan would scan the ENTIRE Machine...yet finding the infected files in his logon (after multiple clean (including full) scans from my login/session ) lead me to believe that only common files and the person's session that peforms the scan are checked...is this true? If true...does that mean other users are inherently protected from viruses in other peoples login/session files? Maybe I just don't get how macs work yet? Any help or insight would be appreciated. Two disclaimers: 1) Yes I know about the debate re. whether AV software's even necessary....please spare me the flaming that's not what this is about. 2) I have opened an inquiry with the vendor...but based on experiences with other vendors (e.g. Lavasoft and Acronis...I expect nothing useful back.