If you’ve heard of the Conficker, it is finally doing something. Spreading and updating through P2P, dropping a mystery payload into infected computers. It is said to shutdown and not replicated itself on May 3rd, according to TrendLabs Malware Blog. However, infected computers could still be remotely controlled to do something else. If you are infected, you would have,

  1. Slow computer performance
  2. New desktop shortcuts or switched homepage
  3. Popups

To check if your computer is infected, you can use Conficker Eye Chart or this site at the University of Bonn. To remove the Conficker worm, visit this Conficker Removal Guide.