The problem was I hadn't sent a package, though I was expecting to receive one. I checked the order I had made and discovered my package was being shipped via USPS not UPS. Next I searched on email hoaxes and discovered I had, in fact, received an email hoax with a virus attached.
With the holidays nearly in full swing and people sending packages probably more than any other time of the year, I wanted to share this with you. NEVER downlaod attachments to an email unless you are sure you know the sender.