When you're playing a game like Guitar Hero, one of the most important features is the sound. If the audio sucks coming out, it will interfere with your gameplay, as it is centered solely around making music. Well when Guitar Hero III: Legends of Rock came out for the Wii, people noticed that it only played sound in mono, which really sucks. Finally Activision has setup a replacement program so that you can get a new disc that has stereo sound.
While this sounds like an excellent solution, it's really not. Once you get in touch with Activision, you'll get a pre-paid envelope that you stick your disc in. Once it's off, you'll have to wait between 3 and 4 weeks for your new stereo-equipped disc shows up.
I think it's a bit unreasonable for users to have to wait upwards to a month just to have an issue like this fixed. I'm not bashing on the Wii or anything, but these are exactly the kinds of situations that could easily be fixed with a downloaded software update, no?