In case you missed it, there's a recall on power cords for some HP printers.
What to look for:

1. DeskJet 800/900 series or Photosmart 1000/1100/1200/1300 series printer
2. Gray power cord
3. "Longwell" on the plug where the prongs are

If your cord meets all three conditions, contact HP for a free replacement
cord:
Web: http://h30022.www3.hp.com/home1/bridge.php
Phone: 1-877-917-4378, 24 hours a day, seven days a week

The affected cords are a potential electrocution/shock hazard. See
http://www.hp.com for more information.

Lee