It seems that Symantec has finally managed to get rid of the curse "NORTON IS A MEMORY HOG" since they released Norton Internet Security 2009 (NIS09) and Norton Antivirus 2009 (NAV09). The NIS 2010 and NAV 2010 also comes as a breath of fresh air. I just installed it today and its works just fine. It has undergone a UI overhaul since its ancestors. The download link is given below, I suggest all you to try it. I am sure u will not look back.