Norton AntiVirus not aggressive enough and it keeps missing obvious threats.

Hi. I recently purchased Norton Systemworks 12 Standard and it had Norton AV bundled with it. I've noticed few issues with it. Even when I set "Advanced Heuristics" to aggressive on the settings page, Norton AV keeps missing obvious threats. Here are two examples:

 

Example one: A virus compressed inside an archive is sitting in a random folder. When running Rising-AV (Chinese AV app), just opening that folder would trigger an alarm. Rising-AV scans files in directories as you open those directories. With Norton AV I can open the directory and even open the compressed file itself and it still does NOT detect the virus. Only way to detect it is to right click on the file and force a scan. I mean what is going on here? Even opening the archive with the virus detects nothing.

 

Example two: Downloading a compressed archive from internet that contains a virus triggers an alarm with Rising-AV. Norton AV on the other hand does nothing in such situation. I tried this with three different browsers and the results were same. (Firefox, Chrome, and IE8).

 

Before I uninstall and return this product to MicroCenter for a refund, is there anything I can do to make Norton AV more aggressive or just plain smarter at least?