I paid for upgraded computer protection at a cost of $89.99. Shortly after, my computer started doing all kind of weird things (ie changing & deleting documents).
I worked with it trying to correct things that messed up for months believing it couldn't be a virus because I had supposedly purchased good virus protection.
Finally, I took it to Best Buy, where they found and deleted 14 viruses at a cost to me of $199.99. I have notified McAfee of the problem and asked for a refund. However, I haven't heard back from them.