Not that this will change anything, but my daughter's iPad charges on a USB cable if it's plugged into the wall, but not from the computer (it may trickle charge, but it's hard to say). Much as I like the Iconia, the designers missed big on this aspect.
Just adding my voice to the chorus of Boos against short, proprietary cables, wall bricks to carry around and to leave in hotel rooms, and non-folding AC prongs sticking through backpack innards. USB is a genuine advance in technology. It's a shame the designers chose not to use it.