I do not agree…
Norton Utilities are very good in my opinion, even in XP systems.
Speed Disk has no comparison with any other defragmentation utility in my opinion.
Norton Cleasweep is not very ‘strong’. Can uninstall some software and clean some garbage.
Norton WinDoctor works well.
Norton Disk Doctor does de same as internal scandisk for Windows (chkdsk.exe).
Everything except NAV works perfectly with avast. 