Falls into not responding state for over 1min 30secs.

I have encountered a problem with Norton Internet Security for Mac.  

When I open audio CD mounted on Mac using NSOpenPanel, NSOpenPanel falls into not responding state for over 1min 30secs.  

The length of not-responding time may varies with Mac speed, optical drive speed, and so on. 

If I uninstall Norton Internet Security for Mac, the problem have gone.  If I install Norton Internet Security for Mac to another Mac, the problem appears.  That is to say the problem comes with Norton Internet Security for Mac.

I have already uninstalled Norton Internet Security for Mac, and have bought Kaspersky Internet Security – Multi-Device.  Kaspersky Internet Security does not have any problem.

The reason why I choose I need solution is that I'd like to know how Norton people take action for this problem...