This happened a few months ago. Recently I reloaded my system and wasn't having any problems until Microsoft rolled out their monthly updates last night.
In both instances IE 9 32-bit was working normally with Norton Internet Security. I also use the Norton Toolbar with the Vault/Login Assistant.
In both instances, after a Microsoft monthly update, IE 9 32-bit would come up but not load a page and was unresponsive. If I had not cleared the cache, I would see the last page I visited (in IE 9 64-bit) but it was unresponsive. I could use IE 9 64-bit without any problems but Norton Toolbar does not work with this version.
I search the Norton Forums both times and didn't find this specific problem. It sounds like a campatibility issue to me. One of the updates last night was -
Security Update for Internet Explorer 9 for Windows 7 for x64-based Systems (KB2797052)
Installation date: 2/13/2013 3:02 AM
Installation status: Successful
Update type: Important
A security issue has been identified that could allow an unauthenticated remote attacker to compromise your system and gain control over it. You can help protect your system by installing this update from Microsoft. After you install this update, you may have to restart your system.
More information: http://go.microsoft.com/fwlink/?LinkId=275837
Help and Support: http://support.microsoft.com
There are no error messages and I never see an indiciation that the page is not responding.
Is there a conflict between this update and the Norton Toolbar or security settings within Norton Internet Security? Is there a patch or am I going to have to reload my system every time this happens?
Thanks!