It's like an echo through time of one year ago. A major rhythm game with cool new hardware is released, and angry gamers find that their expensive plastic instruments aren't working properly. This time, it's Guitar Hero: World Tour, though, and not Rock Band that's the culprit. Joystiq reports that the most common problem seems to be broken cymbals, followed by drum heads and then the new guitar controller. Unfortunately for GH fans, the Activision warranty isn't quite up to par with Rock Band's: players must ship back controllers at their own expense. Hopefully, if the problem is indeed as widespread as Rock Band's were last year, they will change their customer service policies. In the meantime, you might try your luck returning your gear to your local retailer.