Real Player Problem with Norton

I have the latest version of Norton and have Real Player 11.1.1. The problem is this. Real player has a plugin that allows you to download videos from the internet really quicky, such as from Youtube. However, once the download has finished, my CPU usage goes to 50%+ unless I end the realplayer.exe process. I found out that Norton has something to do with this when I saw 'unauthorised access logged, risk medium, actor: realplayer.exe, etc,' in my Norton history. Does anyone know how I can fix this problem of CPU usage going above 50% each time I use Real PLayer to download? PS I use vista. NIS2009.

 

Below is a screenshot of the problem. Thanks in advance.

 

 problem.jpg