I have Norton Anti-Virus 2009 (with Antispyware) and whenever I try to do a full system scan, it scans the same way as the quick scan. When it scans, it says "scanning commonly infected areas and start-up files." The full system scan only scans up to 6,000 files, but I can't change it to scan the whole system. I've tried un-installing it completely twice and reinstalling it but that hasnt solved the problem.
How do i rectify this problem?