This may lead to a few comments but. Norton does not seem to be working to well with Windows 7. I am sure they will sort it out. But, meanwhile, why not disable it and try , for example, MSE (Free!) or Avira (also FRee). I think, perhaps, you may never lok back.
I would also suggest to get rid of Norton, it does not work as well as alot of the free programs out there. Another very good antivirus program out there is called Avast you can google for it. Avast Home
Uninstall Norton and run Symantec's Norton Removal Tool. Make sure you have your Product key (see info on that link) so that you can reinstall it.
I don't prefer to use Norton Anti-Virus now, and haven't heard of the Windows 7 problems davehc mentions, but lately Norton has been getting good reviews for effectiveness vs. similar products. Here is a review from PCWorld.
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