The headphone jack on my notebook (see sig) likes to stop working intermittently. When this happens, the volume buttons will not change the sound level, but the computer displays the usual volume overlay with a "NO" circle. In addition, the lyrics of sounds, when the jack isn't misbehaving, are almost unhearable. I thought it my be my speakers since they're new, but the iPod has none of these issues with the speakers. Any ideas? This is incredibly irritating because the built in speakers sound like garbage. Thanks for your help in advance.