Try un-installing the anti-virus product and re-installing it. (You may need to reboot. You may need to see if the manufacturer has a special uninstaller program. Some AV products don't uninstall that easily.)
I've seen this on my machine and it was solved by re-installing.
Frank Bebo
February 2010
You don't say which anti-virus product you are using, so it is difficult to help you.
Jay
February 2010
Automatic Answer
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