Gnomes can't handle their weapons. At least not in the Wrath beta. In a strange graphics glitch, gnomes of certain classes look as if their swords are glued to the backs of their hands instead of being grasped. The glitch occurs whether fighting or not. It doesn't happen with Warlocks, who hold their weapons correctly, but I was able to replicate it with a Rogue and there are Warrior screenshots elsewhere on the web. Some players are even reporting that their offhand weapon is floating away and seeming to fight by itself. Blue forum poster, Gradina, says that Blizzard knows about the issue and is working on a fix.
Now in the meantime, I think a little creativity is called for. Instead of stabbing or slicing with your sword, you could slap mobs upside the head. (Who doesn't like the phrase "upside the head"?) Or, you could spin around really quickly, Whirlwind style, and scrape everyone on the ankles, thereby cutting them down to your size. Maybe for the female Gnomes out there, you could use your weapon as a mirror for smoothing out split ends after a fight. And if your offhand weapon gets frisky and floats away? Take some time out for a bite of toast or to smell the roses while your extra weapon does all the work.