The Lenovo S-Series used to induce cringes around the MaxPC offices, and with good reason. These units used to represent the lowest cost, most underpowered Netbooks Lenovo could produce. They were decent machines for surfing the net or jotting down a few notes in Word, but not much else. Fast forward to yesterday however, and the S300, S400, and S405 are actually looking like somewhat capable machines. Starting at just $499, Lenovo is offering up Netbook alternatives that literally blur the line between the two categories.