My computer keeps saying I've got mail

One day a man decided to go sit on his porch and watch the sun rise and set. The next thing you know there is a blonde running to her mailbox. She kept running back and forth from her house to the mailbox for a good ten minutes.

Finally the man got tired of wondering, and asked, "Why do you keep running back and forth to the mailbox?"

The blonde replied, "My computer keeps saying I've got mail."