I was just trying to write a letter here using Mail, and my firewall told me someone was trying to log my keystrokes. I denied the attempt, and my connection disconnected and wouldn't connect. I had to restart the computer, and it happened again. I was using IE, so I restarted with Opera, and the problem is gone. I find it interesting that someone, or some program, was trying to read what I wrote to someone here.
I've never had this happen before in my life.