Internet Explorer 10 processes hang on IE exit

With Norton Family enabled, on a Win 7 Home Premium machine, IE 10 is not closing all it's processes on exit. It leaves behind iexplore.exe *32 processes. If I try to use Task Manager to close them, they either don't close or I get an "Access Denied..." error. These are the steps I took to verify the problem (using Admin Account):

1. Task Manager shows NF.exe is running

2. Open 5 tabs, for different sites, in IE

3. Close IE -> Internet Explorer window closes

4. Check, using Task Manager:  iexplore.exe *32 processes are still running in the background

5. Disable Norton Family from running

6. Reboot Machine

7. Task Manager verifies NF.exe is NOT running

8. Open 5 tabs, for different sites, in IE

9. Close IE -> Internet Explorer window closes

10. Check, using Task Manager:  All iexplore.exe *32 processes are closed.

Re-enabling Norton Family and Rebooting gives me the same process hang issue.

 

I need to use IE (even though I prefer FF), as I have some applications that use ActiveX controls.

The ActiveX controls are not a factor as they are loaded and operate the same whether Norton Family is enabled or not.