I hate Norton,and many of the systems I repair have at least a version of Norton antivirus on them,usually out of date and wont uninstall. If the whole utility package is installed I call it fully corrupted.
Yea I used to have my own business repairing computers. I would say prolly 80% of the problems with norton could be corected if people would keep the engine and definitions uptodate. Norton doesn't make this easy by making people having to pay for new releases to stay current every year.