We'd handled ASUS' UX21 back at Computex, but we'd never gotten up close and personal with its larger brother, the UX31 -- until now. We spotted the 13.3-inch bodacious aluminum beaut just chilling at the Ultrabook pavilion at Intel Developer Forum. With the same 0.67-inch profile as its smaller brother, that larger footprint means it's naturally a bit heavier at 2.9 pounds, yet available with the same Core i5 (or optional i7) innards. More to come later this month when