Acer Aspire One, 1G, 160G, WinXP, 6-cell for $349 at Costco b&m
I posted this in the Lenovo S10 thread, but it probably merits its own post.
ScottC confirmed that it is, indeed, the 6-cell version in the other thread.
This is a great deal, especially with Costco's return policy.
-David