New system, same problem. Norton 360 is leaving a lot of files not backed up

Please read Re: Full backups - Norton 360 - Norton Community for reference.  Back then, I had a XP Pro SP3 machine.  Well, that machine died and I now have a Vista 64-bit SP2 machine from Dell.  Everywhere I look I see blue chevron icons (and at really, really, low res too boot).  I still think that 360 should periodically back up all files, changed or not.  It definitely should be backing up files that have the chevron icon.  I tried running the backup manually, but 360 will back up, say, 30 files–leaving thousands untouched.