I have NAV, and am getting the "cannot repair" message for "Hacktool Rootkit". I tried to understand the other posts, but I'm not that savy.
C:\windows\systems32\msvol.tlb
Also, everytime I start my computer and when I open a new program a NAV message says "Norton anitvirus does not support the repair feature, please uninstal and reinstall. This message is posted over a "windows installer" message.
Thanks!