Why is Download Insight sometimes inconsistent about notifications?

Hi:

 

In reference to NIS 2010...

 

I have noticed that on some occasions where I download an EXE file to my system, there is no popup from Download Insight informing me of the file's status. The physical area of the screen is not obscured. I then do a right-click context scan just in case.

 

Any ideas?

Message Edited by Plankton on 01-03-2010 10:50 PM