ASUS impressed the world with its lightweight, inexpensive 13.3-inch UL30 over the summer, and just last week impressed us with its switchable-graphics packing bigger cousin, the UL80Vt. Now the 30 is getting the discrete treatment, enabling users to choose from molasses rendering and "all-day computing" battery life or slightly more robust graphics and slightly (about an hour) shorter longevity. The system also packs DDR3 memory, a 1.4GHz Intel Core 2 Duo SU7300 processor (able t