Mike Langberg of the San Jose Mercury News on the sub-$1,000 ultralight Averatec 3150 laptop, which weighs just 4.3 pounds. That’s not as light as, say, Sharp’s MM10, which is just over 2 pounds, but for the money you get a 1.3GHz processor, a 12.1-inch display, 256MB of RAM, a 30GB hard drive, a DVD/CD-RW drive, and built-in WiFi.