NOT KNOWN -- My vote for "worst customer service of the decade" goes to Symantec. Over the course of two weeks I was bounced around from one 800# to the next, six in total, but could never get a satisfactory answer to my problem because I was always on hold listening to a recording about "our usual fine service". Emails? Forget it - they don't answer them. Because their system couldn't identify my produce serial number I couldn't renew a subscription and was forced to buy a new (3 computer) package. Then, when I tried to download the new product to a second computer their system once again could not find the new serial number. They are literally forcing me to spend $209.85 instead of $49.95 but I can't endure any endless sessions being put on hold. I would appreciate a recommendation for another anti-virus company.