Lightest notebook computer

There are lots of brand new notebook computers out in the market now, and they are getting smaller and lighter. So i was thinking which of them is the lightest. In my research i found the Fujitsu LifeBook Q2010 weighs in at 2.2 pounds with a 12.1 inch screen. Unfortunately it has a 1.2Ghz processor and a 30 GB hard drive though it comes with XP Pro and a DVD writer. The second lightest is the The Dell Latitude D420 also has a 12.1 inch screen and is significantly less expensive but again 1.2 GHz and a slow (4200rpm) 30 GB HD and it weighs around 3 pounds. It also comes with 512MB of DDR2-533 SDRAM on an integrated DIMM. The upgrade to 1GB or to 1.5GB is reasonable, but the 2GB configuration costs an extra $1000 (probably because it requires a 1.5GB DIMM).