NIS 2010 seems to have trouble dealing with in use system files

Hi! All,

 

Back on 2-21-10 my NIS 2010 product recieved an update and afterwards an idle full system scan was conducted (as far as I can tell)  during the full system scan NIS quarantined ntldr, ntoskrnl.exe, and .dll rendering my system pretty much dead.  I have had to completely reinstall Windows XP Professional and bring back up to date (which is still in progress) and reinstall all other software.  I have not had the experience since reinstalling everything and bringing NIS 2010 up to date.  I am still wondering how NIS 2010 was able circumvent the system file protection on my system though.  I would also like to know if anyone else has experienced this.