I'm losing my cookies

Greetings,

Fort the past few weeks, when I do a Full system scan, all of my Internet Explorer cookies get deleted before the scan is finished. My settings are the same as they've always been (Computer > Computer Scan > Tracking Cookies Scan > Ask Me). How can I find out why all of my cookies are being deleted?

I'm using Norton AntiVirus 2014 (21.6.0.32).

Thanks,
Shane.