In the past decade, many bike brands have begun a slow transition towards disc brakes, which provide superior stopping power, though they are heavier and not as easy to adjust. Unfortunately, the rotor—the thing the brake caliper grabs onto to create stopping friction—on many bikes is located very close to the center of the wheel. In fact, it's close enough to possibly come in contact with the quick-release lever, which is used to "quickly release" the wheel from the frame.
While they may not always be touching, the lack of a foolproof system has led 17 different bike manufacturers to launch a huge recall to fix the problem.
According to VeloNews.com, here are the brands and model years involved in the recall:
Civia Cycles: 2008-2012
Though most bikes with disc brakes have quick-releases, manufacturers are experimenting with thru-axles, which may replace the venerable quick-release on many future bikes.
In any event, consumers who own any affected bike should contact the distributor or manufacturer for details on on how to get new quick-release skewers that won't rub the rotor.