THG had a look at Sony's VAIO VGN-T350P and they seem to be impressed with this lightweight laptop:

Weighing only 3 pounds and measuring 10.7 x 8.1 x 1.34", this laptop is a road warrior's dream. It delivered over 5 hours of battery life, and in some cases over 7 hours plus, depending on the test we ran - this is the best we have seen yet in such a small package. Performance, especially on battery, was also very good for a home and office mobile computer with limited graphics capability.



Link: Tom's Hardware