To be fair, I have only tested these properly with the 2G iPod Touch, so they may fare better with the iPhone or the new Nano. I have some suspicions as to the problem. Take a look at this closeup:
See Also: Griffin TuneBuds Now Support iPods Touch, Nano and Classic ...Griffin iTalk: Free Voice Reco...
Apple’s September events have traditionally revolved around iPods and iTunes, so it’s obvious this will be the theme of the event. But what, exactly, about the iPod? There’s a pile of evidence suggesting Apple will release new iPod Touch and iPod Nano models with cameras. No Apple Tablet
Thu, Aug 27 | from Wired