I too have NU 16 and Win 7, and have never seen this acton when running NU. As Krusty13 notes it could be a PUP that you have picked up. A PUP is a Possibly Unwanted Program. While they are annoying, they do not cause damage to your system. Some people actually want the 'Features' offered by these programs.
Norton products concentrate on malware that can damage your system, that is why PUPs are not detected.
You can add your voice to a post in the Product Suggestions board to add this protection http://community.norton.com/t5/Product-Suggestions/A-PUP-category/m-p/847244#U847244
I would suggest a second opinion scan using the FREE version of Malwarebytes. You can find it here http://www.malwarebytes.org/products/malwarebytes_free/